prickle vs pricker

prickle and pricker both are nouns.

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

As nouns, prickle and pricker are synonyms defined as:

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

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

prickle (noun)	pricker (noun)
a small sharp-pointed tip resembling a spike on a stem or leaf	an awl for making small holes for brads or small screws
	a small sharp-pointed tip resembling a spike on a stem or leaf

prickle (verb)	pricker (verb)
make a small hole into, as with a needle or a thorn
cause a stinging or tingling sensation
cause a prickling sensation