• 共通きょうつう — common, shared
• 共感きょうかん — empathy
• 公共こうきょう — public, communal
• 共存きょうぞん — coexistence
• 共演きょうえん — co-starring, joint performance
• 共同きょうどう — collaboration, partnership

This kanji shows two hands offering something together. It originally depicted sharing or holding something in unison. That’s why it often appears in words related to partnership, unity, and shared action.

二人ふたりは 共通きょうつうの趣味しゅみがあります。
The two share a common hobby.

共感きょうかんできる話はなしだった。
It was a story I could empathize with.

この施設しせつは 公共こうきょうのものです。
This facility is public.

🎧 “キョウ” is used in many compound words. “とも” is rarer and often appears in historical or set phrases.