semiconductor device vs semiconductor unit

semiconductor device and semiconductor unit both are nouns.

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

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

semiconductor device and semiconductor unit: a conductor made with semiconducting material

Other synonyms of semiconductor device include semiconductor.

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