death vs expiry

death and expiry both are nouns.

Word	Noun	Adjective	Verb	Adverb
death	Yes	No	No	No
expiry	Yes	No	No	No

As nouns, death and expiry are synonyms defined as:

Other synonyms of death include decease.

death (noun)	expiry (noun)
the act of killing	the event of dying or departure from life
the event of dying or departure from life	a coming to an end of a contract period
the permanent end of all life functions in an organism or part of an organism
the absence of life or state of being dead
a final state
the time when something ends
the time at which life ends; continuing until dead