mA vs current unit

mA and current unit both are nouns.

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

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

mA: one thousandth of an ampere
current unit: a measure of the amount of electric charge flowing past a circuit point at a specific time

mA (noun)	current unit (noun)
one thousandth of an ampere	a measure of the amount of electric charge flowing past a circuit point at a specific time