Idea

noun

1. Something conceived} in the mind {sx, notion
2. An abstract or generic idea generalized from particular instances

   "the basic concepts of psychology"

adjective

1. Organized around a main idea or theme

   "a concept album"

2. Created to illustrate a concept

   "a concept car"

noun

1. A collection of songs about a specific theme or story

noun

1. A car built to test or show a new design

adjective

1. Having or exploiting elements (such as fast action, glamour, or suspense) that appeal to a wide audience

   "high-concept movies"

noun

1. Something that demonstrates the feasibility of a concept (such as a product idea or a business plan)

   "Even if it succeeds, the $5.9 billion reactor will be just a proof of concept, with commercial fusion power still decades away."

noun

1. The mental image one has of oneself

idiom

1. Lacking understanding of the nature or meaning of (something)

   "She seems to be a little unclear on the concept of good manners."