Dons glasses well etymologically... the "semi-" in semiconductor means "partial", something between an insulator and a conductor. A capacitor is an insulator be

Dons glasses well etymologically... the "semi-" in semiconductor means "partial", something between an insulator and a conductor. A capacitor is an insulator between two conductors. (But this approach fails on the temperature coefficient of resistance test: capacitor ESR increases with temperature while semiconductors have a negative coefficient.)