sticker vs thorn

sticker and thorn both are nouns.

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

As nouns, sticker and thorn are synonyms defined as:

sticker and thorn: a small sharp-pointed tip resembling a spike on a stem or leaf

Other synonyms of sticker include pricker, prickle, spikelet, spine.

sticker (noun)	thorn (noun)
a short knife with a pointed blade used for piercing or stabbing	something that causes irritation and annoyance
an adhesive label	a Germanic character of runic origin
a particularly difficult or baffling question or problem	a small sharp-pointed tip resembling a spike on a stem or leaf
a small sharp-pointed tip resembling a spike on a stem or leaf