diode vs semiconductor

diode and semiconductor both are nouns.

Word	Noun	Adjective	Verb	Adverb
diode	Yes	No	No	No
semiconductor	Yes	No	No	No

As nouns, semiconductor is a hypernym of diode; that is, semiconductor is a word with a broader meaning than diode:

Other hypernyms of diode include semiconductor device, semiconductor unit.

diode (noun)	semiconductor (noun)
a semiconductor that consists of a p-n junction	a conductor made with semiconducting material
a thermionic tube having two electrodes; used as a rectifier	a substance as germanium or silicon whose electrical conductivity is intermediate between that of a metal and an insulator; its conductivity increases with temperature and in the presence of impurities