lopper vs pruning hook

lopper and pruning hook both are nouns.

Word	Noun	Adjective	Verb	Adverb
lopper	Yes	No	No	No
pruning hook	Yes	No	No	No

As nouns, lopper and pruning hook are synonyms defined as:

lopper and pruning hook: a long-handled pruning saw with a curved blade at the end and sometimes a clipper; used to prune small trees

Other synonyms of lopper include pruner.

lopper (noun)	pruning hook (noun)
a long-handled pruning saw with a curved blade at the end and sometimes a clipper; used to prune small trees	a long-handled pruning saw with a curved blade at the end and sometimes a clipper; used to prune small trees