He has knowledge and experience as well.
- Il a la connaissance ainsi que l'expérience.
Do you have any knowledge of French?
- Avez-vous quelque connaissance du français ?
He has a lot of acquaintances.
- Il a beaucoup de connaissances.
She is more of an acquaintance than a friend.
- C'est plus une connaissance qu'une amie.
He is acquainted with the modern history of France.
- Il a des connaissances en histoire moderne de la France.
He is acquainted with the custom.
- Il a connaissance de la tradition.