jemmy vs crowbar

jemmy and crowbar both are nouns.

Word	Noun	Adjective	Verb	Adverb
jemmy	Yes	No	No	No
crowbar	Yes	No	No	No

As nouns, crowbar is a hypernym of jemmy; that is, crowbar is a word with a broader meaning than jemmy:

Other hypernyms of jemmy include pry, pry bar, wrecking bar.

jemmy (noun)	crowbar (noun)
a short crowbar	a heavy iron lever with one end forged into a wedge