FET vs junction transistor

FET and junction transistor both are nouns.

Word	Noun	Adjective	Verb	Adverb
FET	Yes	No	No	No
junction transistor	Yes	No	No	No

As nouns, junction transistor is a hypernym of FET; that is, junction transistor is a word with a broader meaning than FET:

FET: a transistor in which most current flows in a channel whose effective resistance can be controlled by a transverse electric field
junction transistor: a semiconductor device capable of amplification

Other hypernyms of FET include electronic transistor, transistor.

FET (noun)	junction transistor (noun)
a transistor in which most current flows in a channel whose effective resistance can be controlled by a transverse electric field	a semiconductor device capable of amplification