noun
the same person; identical person
Used to assert that two appearances or references are actually the same individual. Often appears in contexts of mistaken identity, disguise, or verification.
目撃者の証言から、犯人は同一人物だとわかった。
From the witness testimony, it turned out the culprit was the same person.
この写
Is the person in this photo the same person as the one in that photo?