stapling machine vs stapler

stapling machine and stapler both are nouns.

Word	Noun	Adjective	Verb	Adverb
stapling machine	Yes	No	No	No
stapler	Yes	No	No	No

As nouns, stapling machine and stapler are synonyms defined as:

stapling machine and stapler: a machine that inserts staples into sheets of paper in order to fasten them together

stapling machine (noun)	stapler (noun)
a machine that inserts staples into sheets of paper in order to fasten them together	a machine that inserts staples into sheets of paper in order to fasten them together