trachodont vs hadrosaurus

trachodont and hadrosaurus both are nouns.

Word	Noun	Adjective	Verb	Adverb
trachodont	Yes	No	No	No
hadrosaurus	Yes	No	No	No

As nouns, hadrosaurus is a hypernym of trachodont; that is, hadrosaurus is a word with a broader meaning than trachodont:

trachodont: large duck-billed dinosaur of the Cretaceous period
hadrosaurus: any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic

Other hypernyms of trachodont include duck-billed dinosaur, hadrosaur.

trachodont (noun)	hadrosaurus (noun)
large duck-billed dinosaur of the Cretaceous period	any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic