Common Point
Common Feature, Commonality
noun
We pass through this point together. This point is our common point. It is where our ideas, philosophies, and bodies pass through each other.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
共通点がない
there's no commonality
共通点がある
there are commonalities
共通点が見つかる
to find a commonality
コウイチとは共通点が全くないから、何を話せばいいか分からないよ。
I don't know what to talk about because Koichi and I have nothing in common.
日本と中国は文化の共通点がたくさんあります。
Culturally, Japan and China have many things in common.
俺とコウイチの共通点？死ぬほどウィスキーが好きって所くらいかな。
What do Koichi and I have in common? I guess we both love whiskey to death.