Not talk the same language.

Go against the grain with one.

Out of keeping with.

A square peg in a round hole.

eg：When discussing philosophy, we are not talking the same language.

中英俚语俗语来源：礼记·学记：“发然后禁，则杆格而不胜，时过然后学，则勤苦而难成。”

同义词：话不投机半句多 It' s ill talking between a full man and a fasting.

反义词：气味相投 8irds of a feather flock together.