This is the 389th most frequent Dutch word.
kennis
Knowledge.
In this sentence, 'kennis' refers to expertise or information possessed by someone about a specific subject.
Hij heeft veel kennis over geschiedenis.
He has extensive knowledge about history.
Here, 'kennis' is part of a phrase meaning 'to meet or become acquainted with someone'.
Ik maakte kennis met mijn nieuwe buurman.
I got acquainted with my new neighbor.
In this usage, 'kennis' means an acquaintance, indicating a person known to someone.