What do connotation and denotation mean?

Connotation refers to the sum of the unique attributes of the thinking object summarized by a concept.

For example: The connotation of the concept of "state" includes: it is a unique political entity in class society, a product of irreconcilable class contradictions, and a tool for the ruling class to rule and oppress the ruled classes.

Extension (contrast) refers to the number or range of thinking objects summarized by a concept.

For example: The extension of "country" refers to all countries at home and abroad, both ancient and modern. which summarizes the spatiotemporal extent (number) of objects. Extended information

Traditional logic believes that the connotation of a term is its meaning, which is a concept, and is a reflection of the unique attributes of things. For example, the connotation of "commodity" is "labor products produced for exchange"; The denotation of a term is the class composed of the things referred to by the term. For example, the denotation of "person" is the class composed of all people in the past and present.

Bohr-Royal Logic, one of the modern logic textbooks, first proposed the distinction between connotation and denotation. Although later logicians disagreed on the legitimacy of this distinction, the terms "intension" and "denotation" are still used today.