lagomorph vs leporid

lagomorph and leporid both are nouns.

Word	Noun	Adjective	Verb	Adverb
lagomorph	Yes	No	No	No
leporid	Yes	No	No	No

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

lagomorph: relative large gnawing animals; distinguished from rodents by having two pairs of upper incisors specialized for gnawing
leporid: rabbits and hares

Other hyponyms of lagomorph include Duplicidentata, leporid mammal, coney, cony, mouse hare, pika, rock rabbit.

lagomorph (noun)	leporid (noun)
relative large gnawing animals; distinguished from rodents by having two pairs of upper incisors specialized for gnawing	rabbits and hares