blossoming vs ontogeny

blossoming and ontogeny both are nouns.

Word	Noun	Adjective	Verb	Adverb
blossoming	Yes	No	No	No
ontogeny	Yes	No	No	No

As nouns, ontogeny is a hypernym of blossoming; that is, ontogeny is a word with a broader meaning than blossoming:

blossoming: the time and process of budding and unfolding of blossoms
ontogeny: (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 blossoming include development, growing, growth, maturation, ontogenesis.

blossoming (noun)	ontogeny (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