odontiasis vs ontogenesis

odontiasis and ontogenesis both are nouns.

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

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

odontiasis: the eruption through the gums of baby teeth
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 odontiasis include development, growing, growth, maturation, ontogeny.

odontiasis (noun)	ontogenesis (noun)
the eruption through the gums of baby teeth	(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