Hippopotamus amphibius vs hippo

Hippopotamus amphibius and hippo both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hippopotamus amphibius	Yes	No	No	No
hippo	Yes	No	No	No

As nouns, Hippopotamus amphibius and hippo are synonyms defined as:

Hippopotamus amphibius and hippo: massive thick-skinned herbivorous animal living in or around rivers of tropical Africa

Other synonyms of Hippopotamus amphibius include hippopotamus, river horse.

Hippopotamus amphibius (noun)	hippo (noun)
massive thick-skinned herbivorous animal living in or around rivers of tropical Africa	massive thick-skinned herbivorous animal living in or around rivers of tropical Africa