Where does “Khare” come from?

Khare (English) comes from Sanskrit खर, from Proto-Indo-Iranian kʰáras — donkey.

Ancestry of “Khare”, step by step

Step	Language	Word	Meaning
1	Sanskrit	खर	hard, harsh, rough, sharp, pungent, acid; solid;...
2	Proto-Indo-Iranian	kʰáras	donkey