noun, noun which may take the genitive case particle 'no'
same surname; same family name
Refers to sharing the same family name, not necessarily being related. Often used in contexts like 同姓同名 (same surname and given name). Antonym: 異姓 (different surname).
Antonyms: 異姓
彼は私と同姓だが、親戚ではない。
He has the same surname as me, but we are not relatives.
There are two people with the same full name in the class.