pricker vs thorn

pricker and thorn both are nouns.

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

As nouns, pricker and thorn are synonyms defined as:

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

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

pricker (noun)	thorn (noun)
an awl for making small holes for brads or small screws	something that causes irritation and annoyance
a small sharp-pointed tip resembling a spike on a stem or leaf	a Germanic character of runic origin
	a small sharp-pointed tip resembling a spike on a stem or leaf