drop forge vs drop hammer

drop forge and drop hammer both are nouns.

Word	Noun	Adjective	Verb	Adverb
drop forge	Yes	No	No	No
drop hammer	Yes	No	No	No

As nouns, drop forge and drop hammer are synonyms defined as:

Other synonyms of drop forge include drop press.

drop forge (noun)	drop hammer (noun)
device for making large forgings	device for making large forgings