pollard vs lop

pollard is a noun but lop is not a noun.

Word	Noun	Adjective	Verb	Adverb
pollard	Yes	No	Yes	No
lop	No	No	Yes	No

As verbs, lop is a hypernym of pollard; that is, lop is a word with a broader meaning than pollard:

Other hypernyms of pollard include clip, crop, cut back, dress, prune, snip, trim.

pollard (noun)	lop (noun)
a usually horned animal that has either shed its horns or had them removed
a tree with limbs cut back to promote a more bushy growth of foliage

pollard (verb)	lop (verb)
convert into a pollard	cultivate, tend, and cut back the growth of
	cut off from a whole