(of a film, book, etc.) An appealing idea for a work that can be understandably summarized in a few sentences or less.

A concept that cannot be defined in terms of other concepts. Also primitive notion

A form of illustration whose main goal is to convey a visual representation of a concept.

Alternative spelling of proof of concept

plural of primitive concept

A description, usually graphical, showing the major participants or components in a system and their interrelationships.

A diagram showing the relationships among concepts, with the concepts drawn in boxes that are connected with labelled arrows denoting the relationships between concepts, such as "is a", "gives rise to", "results in", "is required by," or "contributes to".

A short and/or incomplete realization of a certain method or idea to demonstrate its feasibility. / (software engineering, perhaps nonstandard) A proof of technology or pilot project.

An album of music where the content follows an overall theme or narrative.

(automotive) An automobile which is not available for retail sale and which is usually only a mock-up having limited functionality, but which may be displayed at auto shows to represent design ideas under consideration for future vehicles.