wrecking bar vs lever

wrecking bar and lever both are nouns.

Word	Noun	Adjective	Verb	Adverb
wrecking bar	Yes	No	No	No
lever	Yes	No	Yes	No

As nouns, lever is a hypernym of wrecking bar; that is, lever is a word with a broader meaning than wrecking bar:

wrecking bar (noun)	lever (noun)
a heavy iron lever with one end forged into a wedge	a rigid bar pivoted about a fulcrum
	a flat metal tumbler in a lever lock
	a simple machine that gives a mechanical advantage when given a fulcrum

wrecking bar (verb)	lever (verb)
	to move or force, especially in an effort to get something open