Lifespan has 2 different meanings across 1 category:
Noun
Noun
1
the period during which something is functional (as between birth and death)
"the battery had a short life"
"he lived a long and happy life"
2
The length of time for which an organism lives.
"The average lifespan of a mayfly is so short that it barely has enough time to mate before dying."
Broader Terms (hypernyms)
Narrower Terms (hyponyms)