retriever vs retrieve

retriever is a noun but retrieve is not a noun.

Word	Noun	Adjective	Verb	Adverb
retriever	Yes	No	No	No
retrieve	No	No	Yes	No

retriever (noun)	retrieve (noun)
a dog with heavy water-resistant coat that can be trained to retrieve game

retriever (verb)	retrieve (verb)
	recall knowledge from memory; have a recollection
	run after, pick up, and bring to the master
	go for and bring back
	get or find back; recover the use of