fill vs brim

fill and brim both are nouns.

Word	Noun	Adjective	Verb	Adverb
fill	Yes	No	Yes	No
brim	Yes	No	Yes	No

As verbs, brim is a hyponym of fill; that is, brim is a word with a more specific, narrower meaning than fill:

fill (noun)	brim (noun)
a quantity sufficient to satisfy	a circular projection that sticks outward from the crown of a hat
any material that fills a space or container	the top edge of a vessel or other container

fill (verb)	brim (verb)
become full	fill as much as possible
make full, also in a metaphorical sense	be completely full
plug with a substance
fill to satisfaction
eat until one is sated
fill, satisfy or meet a want or need or condition or restriction
assume, as of positions or roles
appoint someone to (a position or a job)
occupy the whole of