Latin word quam comes from Proto-Indo-European *kʷ-

Detailed word origin of quam

Dictionary entry	Language	Definition
*kʷ-	Proto-Indo-European (ine-pro)
*kʷód, kʷod	Proto-Indo-European (ine-pro)
quam	Latin (lat)	(after comparative nouns) than. (in comparisons) as. In what (which) way, to what (which) degree; how, how much, as much as, as far as.

Words with the same origin as quam