cytogenesis vs ontogeny

cytogenesis and ontogeny both are nouns.

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

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

cytogenesis: the origin and development and variation of cells
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 cytogenesis include development, growing, growth, maturation, ontogenesis.

cytogenesis (noun)	ontogeny (noun)
the origin and development and variation of cells	(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