pair of pliers vs hand tool

pair of pliers and hand tool both are nouns.

Word	Noun	Adjective	Verb	Adverb
pair of pliers	Yes	No	No	No
hand tool	Yes	No	No	No

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

pair of pliers: a gripping hand tool with two hinged arms and (usually) serrated jaws
hand tool: a tool used with workers' hands

Other hypernyms of pair of pliers include compound lever.

pair of pliers (noun)	hand tool (noun)
a gripping hand tool with two hinged arms and (usually) serrated jaws	a tool used with workers' hands