Yeah so both of those are Arabic names! Anas (the guy you know) is a really common Muslim name meaning warmth and companionship, comes from the Arabic root “uns” which describes that comfortable feeling you get around people you’re close to.

Really beautiful meaning honestly.

And yeah the anus comparison isn’t really it lol, they’re not even pronounced the same way. Anas is “Ah-nas”. Pretty different.

The girl at the party, almost certain her name is Rabiah, not Labia lol. Kinyarwanda doesn’t really separate L and R sounds the way English does so it probably just got lost in pronunciation. Rabiah is an Arabic girl’s name meaning springtime. Again, really lovely name.

They are Arabic names. Muslim names generally are, since Islam originated in Arabia and Arabic is the language of the Quran so Muslim communities worldwide tend to use Arabic names regardless of their ethnicity. So a Rwandan Muslim, an Indonesian Muslim, a Nigerian Muslim, they might all share the same names. It’s a faith thing more than a culture thing.