force unit vs lbf.

force unit and lbf. both are nouns.

Word	Noun	Adjective	Verb	Adverb
force unit	Yes	No	No	No
lbf.	Yes	No	No	No

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

force unit: a unit of measurement of physical force
lbf.: a nontechnical unit of force equal to the mass of 1 pound with an acceleration of free fall equal to 32 feet/sec/sec

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

force unit (noun)	lbf. (noun)
a unit of measurement of physical force	a nontechnical unit of force equal to the mass of 1 pound with an acceleration of free fall equal to 32 feet/sec/sec