semiconductor vs semiconductor device

semiconductor and semiconductor device both are nouns.

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

As nouns, semiconductor and semiconductor device are synonyms defined as:

semiconductor and semiconductor device: a conductor made with semiconducting material

Other synonyms of semiconductor include semiconductor unit.

semiconductor (noun)	semiconductor device (noun)
a conductor made with semiconducting material	a conductor made with semiconducting material
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