Concepts

Concepts have three parts:
(a) a label,
(b) 1-4 attributes, and
(c) examples and nonexamples.

Not all concepts will have the same number of attributes.

Attributes are features or conditions that must exist or be present for the concept to exist.

Examples are illustrations of the concept when all attributes are present

Nonexamples are illustrations of the concept when only some of the attributes are present

For example, a chair must have four legs, a place to sit [for one person only] ,and a back. I can be made of any material, be any color, or have any kind of design. If it has no back it would probably be a stool and if it sat more than one person it could be called a bench.