Erinaceus europaeus vs Erinaceus europeaeus

Erinaceus europaeus and Erinaceus europeaeus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Erinaceus europaeus	Yes	No	No	No
Erinaceus europeaeus	Yes	No	No	No

As nouns, Erinaceus europaeus and Erinaceus europeaeus are synonyms defined as:

Erinaceus europaeus and Erinaceus europeaeus: small nocturnal Old World mammal covered with both hair and protective spines

Other synonyms of Erinaceus europaeus include hedgehog.

Erinaceus europaeus (noun)	Erinaceus europeaeus (noun)
small nocturnal Old World mammal covered with both hair and protective spines	small nocturnal Old World mammal covered with both hair and protective spines