dormancy vs aestivation

dormancy and aestivation both are nouns.

Word	Noun	Adjective	Verb	Adverb
dormancy	Yes	No	No	No
aestivation	Yes	No	No	No

As nouns, aestivation is a hyponym of dormancy; that is, aestivation is a word with a more specific, narrower meaning than dormancy:

dormancy: a state of quiet (but possibly temporary) inaction
aestivation: (zoology) cessation or slowing of activity during the summer; especially slowing of metabolism in some animals during a hot or dry period

Other hyponyms of dormancy include hibernation, estivation, slumber.

dormancy (noun)	aestivation (noun)
quiet and inactive restfulness	(botany) the arrangement of sepals and petals in a flower bud before it opens
a state of quiet (but possibly temporary) inaction	(zoology) cessation or slowing of activity during the summer; especially slowing of metabolism in some animals during a hot or dry period