paster vs sticker

paster and sticker both are nouns.

Word	Noun	Adjective	Verb	Adverb
paster	Yes	No	No	No
sticker	Yes	No	No	No

As nouns, paster and sticker are synonyms defined as:

Other synonyms of paster include gummed label.

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