amelogenesis vs ontogenesis

amelogenesis and ontogenesis both are nouns.

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

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

amelogenesis: the developmental process of forming tooth enamel
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 amelogenesis include development, growing, growth, maturation, ontogeny.

amelogenesis (noun)	ontogenesis (noun)
the developmental process of forming tooth enamel	(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