current unit vs ampere

current unit and ampere both are nouns.

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

As nouns, ampere is a hyponym of current unit; that is, ampere is a word with a more specific, narrower meaning than current unit:

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

Other hyponyms of current unit include A, amp, mA, milliampere, abamp, abampere, international ampere.

current unit (noun)	ampere (noun)
a measure of the amount of electric charge flowing past a circuit point at a specific time	the basic unit of electric current adopted under the Systeme International d'Unites
	a former unit of electric current (slightly smaller than the SI ampere)