crimping pliers vs pliers

crimping pliers and pliers both are nouns.

Word	Noun	Adjective	Verb	Adverb
crimping pliers	Yes	No	No	No
pliers	Yes	No	No	No

As nouns, pliers is a hypernym of crimping pliers; that is, pliers is a word with a broader meaning than crimping pliers:

crimping pliers: a hand tool used for joining two pieces of metal or other ductile material (usually a wire and a metal plate) by deforming one or both of them to hold the other.
pliers: a gripping hand tool with two hinged arms and (usually) serrated jaws

Other hypernyms of crimping pliers include pair of pliers, plyers.

crimping pliers (noun)	pliers (noun)
a hand tool used for joining two pieces of metal or other ductile material (usually a wire and a metal plate) by deforming one or both of them to hold the other.	a gripping hand tool with two hinged arms and (usually) serrated jaws