gummed label vs sticker

gummed label and sticker both are nouns.

Word	Noun	Adjective	Verb	Adverb
gummed label	Yes	No	No	No
sticker	Yes	No	No	No

As nouns, gummed label and sticker are synonyms defined as:

Other synonyms of gummed label include paster.

gummed label (noun)	sticker (noun)
an adhesive label	a short knife with a pointed blade used for piercing or stabbing
	an adhesive label
	a particularly difficult or baffling question or problem
	a small sharp-pointed tip resembling a spike on a stem or leaf