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expiry vs. expiration

expiry

[ik-spahyuhr-ee, ek-spuh-ree] / ɪkˈspaɪər i, ˈɛk spə ri /

noun

plural

expiries

expiration of breath.
an end or termination, as of life or a contract.

expiration

[ek-spuh-rey-shuhn] / ˌɛk spəˈreɪ ʃən /

noun

a coming to an end; termination; close.

the expiration of a contract.
the act of expiring, or breathing out; emission of air from the lungs.
Archaic. death.