接せっ点てん

〈人ひと〉と接せっ点てんを持もつto have a point of contact/connection with someone
仕し事ごとを通つうじていろいろな人ひとと接せっ点てんを持もつことができた。
Through work, I was able to make connections with many different people.
接せっ点てんが汚よごれるfor an electrical contact to become dirty (causing poor connection)
スイッチの接せっ点てんが汚よごれて反はん応のうしなくなった。
The switch's contact got dirty and stopped responding.
〈事こと〉に接せっ点てんを見みつけるto find common ground on something
両りょう者しゃの意い見けんに接せっ点てんを見みつけるのは難むずかしかった。
It was hard to find common ground between the two opinions.
接せっ点てんがないto have no common ground or connection
彼かれとは業ぎょう界かいも違ちがうし、接せっ点てんがなかった。
We work in different industries, so we had no point of contact.

Kanji

接せっ触しょくN1
接触 covers any physical or social contact in general, while 接点 names the specific point where that contact happens.
共きょう通つう点てんN3sense 3
共通点 highlights a shared feature or similarity, whereas 接点 is more about an actual meeting point for interaction or discussion.
交こう点てん sense 1
交点 is the mathematical point where two lines actually cross, while 接点 specifically refers to a point of tangency where they touch without crossing.
インターフェース
接点 is a broader word for a point of contact (physical or metaphorical), while インターフェース specifically denotes a defined connection point between systems or software.

相そう違い点てん sense 3
相違点 points out a difference between people or ideas, the opposite of 接点's sense of shared common ground.

焦しょう点てんN2
焦点 (focal point, or figuratively the main issue) is often confused with 接点 (point of contact/tangency) because both are abstract 'point' terms with similar sound.

個こN5sense 2
接点 as a physical electrical contact point is counted with 個, e.g. 接点が二個ある.

Compound of 接 (connect, touch) and 点 (point). The kanji combination directly yields the meaning 'point of contact'.