gum vs mouth

gum and mouth both are nouns.

Word	Noun	Adjective	Verb	Adverb
gum	Yes	No	Yes	No
mouth	Yes	No	Yes	No

gum (noun)	mouth (noun)
the tissue (covered by mucous membrane) of the jaws that surrounds the bases of the teeth	the opening of a jar or bottle
a preparation (usually made of sweetened chicle) for chewing	the externally visible part of the oral cavity on the face and the system of organs surrounding the opening
any of various trees of the genera Eucalyptus or Liquidambar or Nyssa that are sources of gum	the opening through which food is taken in and vocalizations emerge
wood or lumber from any of various gum trees especially the sweet gum	an impudent or insolent rejoinder
any of various substances (soluble in water) that exude from certain plants; they are gelatinous when moist but harden on drying	the point where a stream issues into a larger body of water
cement consisting of a sticky substance that is used as an adhesive	an opening that resembles a mouth (as of a cave or a gorge)
	a person conceived as a consumer of food
	a spokesperson (as a lawyer)

gum (verb)	mouth (verb)
exude or form gum	express in speech
become sticky	articulate silently; form words with the lips only
grind with the gums; chew without teeth and with great difficulty	touch with the mouth
cover, fill, fix or smear with or as if with gum