Answer:
The denotation of a word gives the word's exact meaning, while the connotation of a word gives the word's emotional meaning.
Example:
Colors are a great example of connotative meaning and denotative meaning. For example, blue's denotative meaning is "of a color intermediate between green and violet, as of the sky or sea on a sunny day." But, blue's connotative meaning is sad or melancholy. You can say, "he is feeling blue", or "she looks blue" to express sadness.