g vs metric weight unit

g and metric weight unit both are nouns.

Word	Noun	Adjective	Verb	Adverb
g	Yes	No	No	No
metric weight unit	Yes	No	No	No

As nouns, metric weight unit is a hypernym of g; that is, metric weight unit is a word with a broader meaning than g:

Other hypernyms of g include weight unit.

g (noun)	metric weight unit (noun)
the 7th letter of the Roman alphabet	a decimal unit of weight based on the gram
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