Organized sets of information used for the execution of tasks and activities within a particular domain.

Business, Finance, and Management

Organized sets of principles and facts applying to business, finance, and management.

Accounting Knowledge of accounting principles and practices. This includes the recording, analyzing, and reporting of financial information.
Business Administration Knowledge of the principles and practices of managing businesses.
Business Management Knowledge related to the planning, organizing, staffing, leading, or directing of organizations including principles and practices of accounting, the disposition of human and material resources, public relations, evaluation, sales and marketing, and economics.
Clerical Knowledge of administrative and clerical procedures and systems such as word processing, managing files and records, stenography and transcription, designing forms, and other office procedures and terminology.
Client Service Knowledge of principles and practices of providing service to clients to maintain and build organizational success.
Economics Knowledge of economic theories, principles, and methods of analysis including simulation and forecasting techniques.
Finance Knowledge of principles and practices of financial management, monitoring and accountability frameworks, reporting procedures, banking, and markets.
Marketing Knowledge of principles and practices for determining consumers' wants and needs, assessing and developing business opportunities, and advertising products and services.
Personnel and Human Resources Knowledge of principles and procedures for personnel recruitment, selection, training, compensation and benefits, labor relations and negotiation, and personnel information systems.
Sales Knowledge of principles and practices for displaying, promoting, and selling products or services.

Communications and Transportation

Organized sets of principles and facts applying to communication and transportation.

Communications and Media Knowledge of media production, communication, and dissemination techniques and methods. This includes alternative ways to inform and entertain via written, oral, and visual media.
Telecommunications Knowledge of transmission, broadcasting, switching, control, and operation of telecommunications systems.
Transportation Knowledge of the principles, methods and systems for moving people and goods by air, sea, rail, or ground transportation, including relative costs, advantages, risks, and limitations.

Education and Training

Organized sets of principles and facts applying to education and training.

Education and TrainingKnowledge of principles and methods for curriculum and training design, teaching, and instruction for individuals and groups, and the measurement of training effects.

Engineering and Technology

Organized sets of principles and facts applying to engineering and technology.

Building and Construction Knowledge of materials, methods, and the tools involved in the construction or repair of houses, buildings, or other structures such as highways and roads.
Computer and Information Systems Knowledge of computer programming, hardware, and software.
Design Knowledge of design techniques, tools, and principles involved in production of precision technical plans, blueprints, drawings, and models.
Electricity (Electrical and Electronics) Knowledge of the design, techniques, and tools applied in electronic and electrical applications.
Engineering and Applied Technologies Knowledge of engineering principles and the techniques used in the planning, development, and application of technology for specific goods and services.
Mechanics and Machinery Knowledge of machines, equipment and tools including their design, uses, repair, and maintenance.

Health Services

Organized sets of principles and facts applying to health services.

Medicine and DentistryKnowledge of the information and techniques needed to diagnose and treat human injuries, diseases, and deformities. This includes symptoms, treatment alternatives, drug properties and interactions, and preventive health-care measures.
Therapy and CounselingKnowledge of principles, methods, and procedures for diagnosis, treatment and rehabilitation of physical and mental dysfunctions, and for career counseling and guidance.

Law, Government, and Public Safety

Organized sets of principles and facts applying to law and public safety.

Government Knowledge of the government regulations, executive orders, and the functioning of government.
Law Knowledge of the legal system, laws, legal codes, court procedures, and precedents.
Public Safety and Security Knowledge of public safety and security operations and systems, of policy, regulations, and procedures for the protection of people, data, and property.

Mathematics and Science

Organized sets of principles and facts applying to mathematics and science.

Biology Knowledge of living organisms including their structure, function, growth, origin, evolution, distribution and classification, and their interdependencies and interactions with each other and the environment.
Chemistry Knowledge of the chemical composition, structure, and properties of substances and of the chemical processes and transformations that they undergo. This includes uses of chemicals and their interactions, danger signs, production techniques, and disposal methods.
Earth Sciences (Geosciences) Knowledge of the integration of chemistry, physics, biology, chronology, and mathematics to study the earth and its atmON Eduhere.
Mathematics and Statistics Knowledge of arithmetic, algebra, geometry, calculus, statistics, and their applications, principles, methods, and functions.
Physics Knowledge and prediction of physical principles, laws, their interrelationships, and applications to understanding fluid, material, atmospheric dynamics, mechanical, electrical, atomic, and sub-atomic structures and processes.

Manufacturing and Production

Organized sets of principles and facts applying to manufacturing and production.

Food Production and Agriculture Knowledge of techniques, materials, and equipment for raising, planting, growing, harvesting, storing, preparing, and preserving food products of animal and plant.
Processing and Production Knowledge of production methods, inputs, outputs, work flow, and industrial processes including safety, quality control, and cost estimation.

Natural Resources and Conservation

Organized sets of principles and facts applying to the natural resources and conservation fields.

ForestryKnowledge of techniques and equipment for forestry resources. This includes trees, forest lands, wood, paper, processing technologies, tree species, landscaping, and urban management.
Other Natural Resources Sciences and ConservationKnowledge of techniques and equipment for various natural resources exploitation (excluding forestry) and conservation related to wildlife, fishing, water ecosystems, nature, parks, and outdoor recreation.

Personal and Culinary Services

Organized sets of principles and facts applying to personal and culinary services.

Culinary Services Knowledge of principles and facts applying to culinary services related to cooking, baking, meat cutting, bartending, and food preparation.
Recreation, Leisure and Fitness Knowledge of principles and practices for displaying, promoting and selling products, or services.
Other Personal Services Knowledge of principles and practices for personal services such as grooming, cosmetology, funeral related activity, and mortuary science.

Social Sciences and Arts

Organized sets of principles and facts applying to social sciences and arts.

Fine and Applied Arts Knowledge of theory and techniques required to create, design, compose and perform works of music, dance, visual art, drama, and sculpture.
Geography Knowledge of principles and methods for describing the features of land, sea, and air masses, including their physical characteristics, locations, interrelationships, and distribution of plant, animal, and human life.
History and Archeology Knowledge of historical events and methods of studying their causes, indicators, archaeological remains, and effects on civilizations and cultures.
Library and Heritage Knowledge of the principles and practices in the classification, storage, retrieval, display, and management of documentation and records in various media, museum artifacts, and works of fine art.
Non-Official Languages Knowledge of the structure and content of a non-official language, including the meaning and spelling of words, rules of composition and grammar, and pronunciation.
Official Languages Knowledge of the structure and content of the official language(s), including the meaning and the spelling of words, rules of composition and grammar, and pronunciation.
Philosophy and Theology Knowledge of different philosophical systems and religions. This includes their basic principles, values, ethics, ways of thinking, customs, practices, and their impact on human culture.
Psychology Knowledge of principles, methods, practices, underlying physiology and neurology of mental processes and behaviours, and of assessment and treatment of psychological disorders.
Sociology, Anthropology and Other Social Sciences Knowledge of group behaviours and dynamics, societal trends and influences, human migrations, ethnicity, cultures, and their history and origins.
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