horned viper vs Cerastes cornutus

horned viper and Cerastes cornutus both are nouns.

Word	Noun	Adjective	Verb	Adverb
horned viper	Yes	No	No	No
Cerastes cornutus	Yes	No	No	No

As nouns, horned viper and Cerastes cornutus are synonyms defined as:

horned viper and Cerastes cornutus: highly venomous viper of northern Africa and southwestern Asia having a horny spine above each eye

Other synonyms of horned viper include cerastes, horned asp, sand viper.

horned viper (noun)	Cerastes cornutus (noun)
highly venomous viper of northern Africa and southwestern Asia having a horny spine above each eye	highly venomous viper of northern Africa and southwestern Asia having a horny spine above each eye