sterility vs dysgenesis

sterility and dysgenesis both are nouns.

Word	Noun	Adjective	Verb	Adverb
sterility	Yes	No	No	No
dysgenesis	Yes	No	No	No

As nouns, dysgenesis is a hyponym of sterility; that is, dysgenesis is a word with a more specific, narrower meaning than sterility:

sterility: the state of being unable to produce offspring; in a woman it is an inability to conceive; in a man it is an inability to impregnate
dysgenesis: infertility between hybrids

Other hyponyms of sterility include impotence, impotency, barrenness, cacogenesis.

sterility (noun)	dysgenesis (noun)
the state of being unable to produce offspring; in a woman it is an inability to conceive; in a man it is an inability to impregnate	infertility between hybrids
(of non-living objects) the state of being free of pathogenic organisms