expire vs predecease

expire and predecease both are verbs.

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

As verbs, predecease is a hyponym of expire; that is, predecease 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
predecease: die before; die earlier than

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

expire (verb)	predecease (verb)
expel air	die before; die earlier than
pass from physical life and lose all bodily attributes and functions necessary to sustain life
lose validity