Where does “bʰūǵ-o-s” come from?

bʰūǵ-o-s (Proto-Indo-European) comes from Proto-Indo-European bʰuǵ-, from Proto-North Caucasian bVχc̣V, from Proto-North Caucasian bVc̣V — young he-goat.

Ancestry of “bʰūǵ-o-s”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeanbʰuǵ-buck, he-goat
2Proto-North CaucasianbVχc̣V—
3Proto-North CaucasianbVc̣Vyoung he-goat
Every word from Proto-North Caucasian bVc̣V →Every word from Proto-North Caucasian bVχc̣V →Every word from Proto-Indo-European bʰuǵ- →