Meaning of "Doppelganger"

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Doppelganger도플갱어#MBTI#사회/이슈#밈/유행어2000s Meme

This term refers to people (or objects) who look so much alike that they appear to be the same person, even though they are not related by blood.

"The person I ran into on the street yesterday looked exactly like my doppelganger, so I paused for a moment."