* Bonjour: This is the most common and versatile greeting, suitable for all situations and times of day.
* Bonsoir: This is used in the evening, from around 6 pm onwards.
* Salut: This is a more informal and casual greeting, typically used among friends and family.
* Coucou: This is a very informal greeting, often used between close friends or family.
You can also use phrases like "Comment allez-vous?" (How are you?) or "Ca va?" (How is it going?) to greet someone and start a conversation.