lyssa vs zoonosis

lyssa and zoonosis both are nouns.

Word	Noun	Adjective	Verb	Adverb
lyssa	Yes	No	No	No
zoonosis	Yes	No	No	No

As nouns, zoonosis is a hypernym of lyssa; that is, zoonosis is a word with a broader meaning than lyssa:

lyssa: an acute viral disease of the nervous system of warm-blooded animals (usually transmitted by the bite of a rabid animal); rabies is fatal if the virus reaches the brain
zoonosis: an animal disease that can be transmitted to humans

Other hypernyms of lyssa include zoonotic disease.

lyssa (noun)	zoonosis (noun)
an acute viral disease of the nervous system of warm-blooded animals (usually transmitted by the bite of a rabid animal); rabies is fatal if the virus reaches the brain	an animal disease that can be transmitted to humans