lip vs brim

lip and brim both are nouns.

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

As nouns, lip and brim are synonyms defined as:

Other synonyms of lip include rim.

lip (noun)	brim (noun)
either the outer margin or the inner margin of the aperture of a gastropod's shell	a circular projection that sticks outward from the crown of a hat
the top edge of a vessel or other container	the top edge of a vessel or other container
either of two fleshy folds of tissue that surround the mouth and play a role in speaking
an impudent or insolent rejoinder
(botany) either of the two parts of a bilabiate corolla or calyx

lip (verb)	brim (verb)
	fill as much as possible
	be completely full