grooving vs rifling

grooving and rifling both are nouns.

Word	Noun	Adjective	Verb	Adverb
grooving	Yes	No	No	No
rifling	Yes	No	No	No

As nouns, grooving and rifling are synonyms defined as:

grooving and rifling: the cutting of spiral grooves on the inside of the barrel of a firearm

grooving (noun)	rifling (noun)
the cutting of spiral grooves on the inside of the barrel of a firearm	the cutting of spiral grooves on the inside of the barrel of a firearm