hibernation vs retirement

hibernation and retirement both are nouns.

Word	Noun	Adjective	Verb	Adverb
hibernation	Yes	No	No	No
retirement	Yes	No	No	No

As nouns, retirement is a hypernym of hibernation; that is, retirement is a word with a broader meaning than hibernation:

hibernation (noun)	retirement (noun)
the act of retiring into inactivity	withdrawal from your position or occupation
the torpid or resting state in which some animals pass the winter	withdrawal for prayer and study and meditation
cessation from or slowing of activity during the winter; especially slowing of metabolism in some animals	the state of being retired from one's business or occupation