Talking about
The expression "parler de" is used to discuss, describe, or refer to a specific topic or theme. It indicates the content or subject of the conversation.
- Je parle de mes vacances. (I am talking about my vacation.)
- Nous parlons de politique. (We are talking about politics.)
Talking to
The expression "parler à " is used to address someone, to communicate directly with a person.
- Je parle à mon ami. (I am talking to my friend.)
- Elle parle à son professeur. (She is talking to her teacher.)