extinction vs death

extinction and death both are nouns.

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

As nouns, death is a hypernym of extinction; that is, death is a word with a broader meaning than extinction:

extinction (noun)	death (noun)
the act of extinguishing; causing to stop burning	the act of killing
a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus	the event of dying or departure from life
complete annihilation	the permanent end of all life functions in an organism or part of an organism
the reduction of the intensity of radiation as a consequence of absorption and radiation	the absence of life or state of being dead
no longer in existence	a final state
no longer active; extinguished	the time when something ends
	the time at which life ends; continuing until dead