sneak in vs supply

sneak in is not a noun while supply is a noun.

Word	Noun	Adjective	Verb	Adverb
sneak in	No	No	Yes	No
supply	Yes	No	Yes	No

As verbs, supply is a hypernym of sneak in; that is, supply is a word with a broader meaning than sneak in:

Other hypernyms of sneak in include add, append.

sneak in (noun)	supply (noun)
	the activity of supplying or providing something
	offering goods and services for sale
	an amount of something available for use

sneak in (verb)	supply (verb)
insert casually	state or say further
enter surreptitiously	give what is desired or needed, especially support, food or sustenance
	give something useful or necessary to
	circulate or distribute or equip with