g vs g-force

g and g-force both are nouns.

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

As nouns, g and g-force are synonyms defined as:

g and 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 synonyms of g include gee.

g (noun)	g-force (noun)
the 7th letter of the Roman alphabet	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
a metric unit of weight equal to one thousandth of a kilogram
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