iterate vs harp

iterate is not a noun while harp is a noun.

Word	Noun	Adjective	Verb	Adverb
iterate	No	No	Yes	No
harp	Yes	No	Yes	No

As verbs, harp is a hyponym of iterate; that is, harp is a word with a more specific, narrower meaning than iterate:

iterate (noun)	harp (noun)
	a chordophone that has a triangular frame consisting of a sounding board and a pillar and a curved neck; the strings stretched between the neck and the soundbox are plucked with the fingers
	a pair of curved vertical supports for a lampshade
	a small rectangular free-reed instrument having a row of free reeds set back in air holes and played by blowing into the desired hole

iterate (verb)	harp (verb)
run or be performed again	come back to
to say, state, or perform again	play the harp