cold chisel vs chisel

cold chisel and chisel both are nouns.

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

As nouns, chisel is a hypernym of cold chisel; that is, chisel is a word with a broader meaning than cold chisel:

cold chisel (noun)	chisel (noun)
narrow chisel made of steel; used to cut stone or bricks	an edge tool with a flat steel blade with a cutting edge

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