cadge vs grub

cadge is not a noun while grub is a noun.

Word	Noun	Adjective	Verb	Adverb
cadge	No	No	Yes	No
grub	Yes	No	Yes	No

As verbs, cadge and grub are synonyms defined as:

Other synonyms of cadge include bum, mooch, sponge.

cadge (noun)	grub (noun)
	a soft thick wormlike larva of certain beetles and other insects
	informal terms for a meal

cadge (verb)	grub (verb)
ask for and get free; be a parasite	search about busily
obtain or seek to obtain by cadging or wheedling	ask for and get free; be a parasite