The differences in concept, connotation, definition and meaning are: different meanings, different emphases and different sources.

First, the meaning is different.

1, concept: one of the basic forms of thinking, reflecting the general and essential characteristics of objective things. In the process of human cognition, it becomes a concept to refine and summarize the similarities and differences of things people feel.

2. Connotation: the sum of the essential attributes of things reflected by a concept, that is, the content of the concept.

3. Definition: an accurate and brief description of the essential characteristics of a thing or the connotation and extension of a concept.

4. Meaning: the meaning contained in (words, etc.). ).

Second, the emphasis is different.

1, concept: "concept" is a product of thinking that reflects the essential attributes of things.

2. Connotation: "Connotation" is the content of the concept.

3. Definition: "Definition" describes the meaning of names and terms, and makes clear provisions.

4. Meaning: "Meaning" is the meaning contained in (words, etc.). ).

Third, the sources are different.

1. Concept: Li Dazhao's Russian Literature and Revolution: "The poets in the first half of the 19th century only had a vague concept of freedom."

2. Connotation: Ling Ke's "Xiang gives life to characters": "Heroes have some common qualities, such as courage in action, firmness and simplicity in faith. But these simple concepts still contain infinitely rich connotations, including the Wang Yang Sea with individuality. "

3. Definition: Mao Zedong's speech and conclusion at the Yan 'an Forum on Literature and Art: "When discussing problems, we should proceed from reality, not from definition."

4. Meaning: Lao She's Four Generations under One Family Erqi: "Today, when he saw Mrs. Qian Shaofu, he remembered that sentence and fully understood its meaning."