resistivity vs ohmage

resistivity and ohmage both are nouns.

Word	Noun	Adjective	Verb	Adverb
resistivity	Yes	No	No	No
ohmage	Yes	No	No	No

As nouns, ohmage is a hyponym of resistivity; that is, ohmage is a word with a more specific, narrower meaning than resistivity:

resistivity: a material's opposition to the flow of electric current; measured in ohms
ohmage: the ohmic resistance of a conductor

resistivity (noun)	ohmage (noun)
a material's opposition to the flow of electric current; measured in ohms	the ohmic resistance of a conductor