Where does “ቡን” come from?

ቡን (Amharic) comes from Arabic بُنّ, from Amharic ቡና — coffee.

Ancestry of “ቡን”, step by step

Step	Language	Word	Meaning
1	Arabic	بُنّ	coffee plant or seed; brine
2	Amharic	ቡና	coffee

ቡን — Etymology, Origin & Word History | Etymology Explorer