Denotation and connotation refer to two different layers of meaning in language.
Denotation is the literal, explicit meaning of a word; essentially its dictionary definition. It is the most direct and objective meaning, stripped of emotion or association. For example, the denotation of the word ambition is a strong desire to achieve a goal or succeed.
Connotation, on the other hand, refers to the implied, emotional, or cultural meanings that a word carries beyond its literal definition. These associations can be positive, negative, or neutral depending on context. For instance, ambition may have a positive connotation when it suggests determination and drive, but it can also carry a negative connotation if it implies greed or ruthless behavior.
Understanding the difference between these two is important in reading and writing because writers often choose words not just for their dictionary meaning, but for the emotional impact they create in the reader.