lyssa vs zoonotic disease

lyssa and zoonotic disease both are nouns.

Word	Noun	Adjective	Verb	Adverb
lyssa	Yes	No	No	No
zoonotic disease	Yes	No	No	No

As nouns, zoonotic disease is a hypernym of lyssa; that is, zoonotic disease 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
zoonotic disease: an animal disease that can be transmitted to humans

Other hypernyms of lyssa include zoonosis.

lyssa (noun)	zoonotic disease (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