graving tool vs graver

graving tool and graver both are nouns.

Word	Noun	Adjective	Verb	Adverb
graving tool	Yes	No	No	No
graver	Yes	No	No	No

As nouns, graving tool and graver are synonyms defined as:

Other synonyms of graving tool include pointel, pointrel.

graving tool (noun)	graver (noun)
a tool used by an engraver	a tool used by an engraver