thorn vs pricker

thorn and pricker both are nouns.

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

As nouns, thorn and pricker are synonyms defined as:

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

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

thorn (noun)	pricker (noun)
something that causes irritation and annoyance	an awl for making small holes for brads or small screws
a Germanic character of runic origin	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