expire vs abort

expire is not a noun while abort is a noun.

Word	Noun	Adjective	Verb	Adverb
expire	No	No	Yes	No
abort	Yes	No	Yes	No

As verbs, abort is a hyponym of expire; that is, abort is a word with a more specific, narrower meaning than expire:

expire: pass from physical life and lose all bodily attributes and functions necessary to sustain life
abort: cease development, die, and be aborted

Other hyponyms of expire include asphyxiate, stifle, suffocate, buy it, pip out, drown, predecease, famish, starve, fall, succumb, yield.

expire (noun)	abort (noun)
	the act of terminating a project or procedure before it is completed

expire (verb)	abort (verb)
expel air	terminate a pregnancy by undergoing an abortion
pass from physical life and lose all bodily attributes and functions necessary to sustain life	cease development, die, and be aborted
lose validity	terminate before completion