Where does “chaga” come from?

chaga (Galician) comes from Old Occitan chaga, from Latin plāga, from Latin plagius, from Ancient Greek πλάγιος, from Ancient Greek -ῐος, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

chaga (Galician): sore; open wound

Definitions

sore; open wound

Ancestry of “chaga”, step by step

Step	Language	Word	Meaning
1	Old Occitan	chaga	—
2	Latin	plāga	plague, misfortune
3	Latin	plagius	—
4	Ancient Greek	πλάγιος	placed sideways, slanting, aslant
5	Ancient Greek	-ῐος	belonging to; of”, “belonging to”, “pertaining to
6	Proto-Indo-European	-yós	Creates adjectives from noun or verb stems

Every word from Proto-Indo-European -yós →Every word from Ancient Greek -ῐος →Every word from Ancient Greek πλάγιος →