retrieve vs retriever

retrieve is not a noun while retriever is a noun.

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

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

retrieve (verb)	retriever (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