titanosaur vs dinosaur

titanosaur and dinosaur both are nouns.

Word	Noun	Adjective	Verb	Adverb
titanosaur	Yes	No	No	No
dinosaur	Yes	No	No	No

As nouns, dinosaur is a hypernym of titanosaur; that is, dinosaur is a word with a broader meaning than titanosaur:

titanosaur: amphibious quadrupedal herbivorous dinosaur with a long thin neck and whiplike tail; of the Cretaceous mostly in the Southern Hemisphere
dinosaur: any of numerous extinct terrestrial reptiles of the Mesozoic era

titanosaur (noun)	dinosaur (noun)
amphibious quadrupedal herbivorous dinosaur with a long thin neck and whiplike tail; of the Cretaceous mostly in the Southern Hemisphere	any of numerous extinct terrestrial reptiles of the Mesozoic era