오 (o) means “five” | MotiTan Korean Dictionary

More examples

오 명이 왔어요.o myeong i wa sseo yo

Five people came.

The number five, like one open hand with all its fingers spread.

다섯taseot: The everyday spoken form for counting five things or people.

다섯이라는 수를 나타내며, 시각이나 날짜 등을 셀 때 쓰는 말.ta seo si ra neun su reul na ta nae myeo si ga gi na nal jja teung eul sel ttae sseu neun mal

This word comes from the Sino-Korean reading of the Chinese character for five, part of the Chinese-character vocabulary adopted into Korean.

In Korean time expressions, this form counts minutes, while a different number system is often used for counting ordinary objects.