tire iron vs lever

tire iron and lever both are nouns.

Word	Noun	Adjective	Verb	Adverb
tire iron	Yes	No	No	No
lever	Yes	No	Yes	No

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

tire iron: hand tool consisting of a lever that is used to force the casing of a pneumatic tire onto a steel wheel
lever: a rigid bar pivoted about a fulcrum

Other hypernyms of tire iron include hand tool.

tire iron (noun)	lever (noun)
hand tool consisting of a lever that is used to force the casing of a pneumatic tire onto a steel wheel	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

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