2.4.6. Key Points

Here are some key points to remember:

• Concepts are units of knowledge identifiable by their stable association with a set of semantic features and with one or more designations (terms).
• Essential semantic features help position concepts in a conceptual system.
• Essential and delimiting characteristics also help in the definition of concepts such that each concept is distinguished from all other concepts in the same system.
• Knowledge in a given subject field is structured according to the hierarchical and associative relationships among concepts.