chisel vs firmer chisel

chisel and firmer chisel both are nouns.

Word	Noun	Adjective	Verb	Adverb
chisel	Yes	No	Yes	No
firmer chisel	Yes	No	No	No

As nouns, firmer chisel is a hyponym of chisel; that is, firmer chisel is a word with a more specific, narrower meaning than chisel:

Other hyponyms of chisel include burin, cold chisel, set chisel, drove, drove chisel, ripping chisel, wood chisel.

chisel (noun)	firmer chisel (noun)
an edge tool with a flat steel blade with a cutting edge	a chisel with a thin blade for woodworking

chisel (verb)	firmer chisel (verb)
carve with a chisel
engage in deceitful behavior; practice trickery or fraud
deprive somebody of something by deceit