amp vs current unit

amp and current unit both are nouns.

Word	Noun	Adjective	Verb	Adverb
amp	Yes	No	No	No
current unit	Yes	No	No	No

As nouns, current unit is a hypernym of amp; that is, current unit is a word with a broader meaning than amp:

amp: the basic unit of electric current adopted under the Systeme International d'Unites
current unit: a measure of the amount of electric charge flowing past a circuit point at a specific time

amp (noun)	current unit (noun)
the basic unit of electric current adopted under the Systeme International d'Unites	a measure of the amount of electric charge flowing past a circuit point at a specific time