concept

/ˈkɒn.sɛpt/

noun

An abstract and general idea; an abstraction.
Understanding retained in the mind, from experience, reasoning and imagination; a generalization (generic, basic form), or abstraction (mental impression), of a particular set of instances or occurrences (specific, though different, recorded manifestations of the concept).
In generic programming, a description of supported operations on a type, including their syntax and semantics.

Practice "concept" in context

WordNote uses spaced repetition across multiple quiz levels, from recognizing the meaning to recalling it in active practice.

No credit card. No install required.