anthesis vs ontogenesis

anthesis and ontogenesis both are nouns.

Word	Noun	Adjective	Verb	Adverb
anthesis	Yes	No	No	No
ontogenesis	Yes	No	No	No

As nouns, ontogenesis is a hypernym of anthesis; that is, ontogenesis is a word with a broader meaning than anthesis:

anthesis: the time and process of budding and unfolding of blossoms
ontogenesis: (biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level

Other hypernyms of anthesis include development, growing, growth, maturation, ontogeny.

anthesis (noun)	ontogenesis (noun)
the time and process of budding and unfolding of blossoms	(biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level