poll vs cut back

poll is a noun but cut back is not a noun.

Word	Noun	Adjective	Verb	Adverb
poll	Yes	No	Yes	No
cut back	No	No	Yes	No

As verbs, cut back is a hypernym of poll; that is, cut back is a word with a broader meaning than poll:

Other hypernyms of poll include clip, crop, dress, lop, prune, snip, trim.

poll (noun)	cut back (noun)
the counting of votes (as in an election)
the top of the head
the part of the head between the ears
an inquiry into public opinion conducted by interviewing a random sample of people
a tame parrot

poll (verb)	cut back (verb)
convert into a pollard	place restrictions on
get the opinions (of people) by asking specific questions	cut down on; make a reduction in
vote in an election at a polling station	cultivate, tend, and cut back the growth of
get the votes of	return in time