operating surgeon vs sawbones

operating surgeon and sawbones both are nouns.

Word	Noun	Adjective	Verb	Adverb
operating surgeon	Yes	No	No	No
sawbones	Yes	No	No	No

As nouns, operating surgeon and sawbones are synonyms defined as:

Other synonyms of operating surgeon include surgeon.

operating surgeon (noun)	sawbones (noun)
a physician who specializes in surgery	a physician who specializes in surgery