A part
同
Shown as a part of 4 words so far, read one way.
どう 4 words
- 同僚どうりょうcolleague; co-worker
同僚 · here “same”
- 同士どうしone another, companion, comrade
同士 · here “same”
- 同一どういつidentity, sameness, similarity
同一 · here “same”
- 共同きょうどうcooperation, association, collaboration
共同 · here “same”
Also written with 同
These words contain the character in their spelling but show no breakdown that names it, so nothing is claimed about its role in them.