force unit vs g-force

force unit and g-force both are nouns.

Word	Noun	Adjective	Verb	Adverb
force unit	Yes	No	No	No
g-force	Yes	No	No	No

As nouns, g-force is a hyponym of force unit; that is, g-force is a word with a more specific, narrower meaning than force unit:

force unit: a unit of measurement of physical force
g-force: a unit of force equal to the force exerted by gravity; used to indicate the force to which a body is subjected when it is accelerated

Other hyponyms of force unit include dyne, N, newton, sthene, pdl, poundal, lbf., pound, pounder, g, gee, pound.

force unit (noun)	g-force (noun)
a unit of measurement of physical force	a unit of force equal to the force exerted by gravity; used to indicate the force to which a body is subjected when it is accelerated