gudgeon vs Gobio gobio

gudgeon and Gobio gobio both are nouns.

Word	Noun	Adjective	Verb	Adverb
gudgeon	Yes	No	No	No
Gobio gobio	Yes	No	No	No

As nouns, gudgeon and Gobio gobio are synonyms defined as:

gudgeon and Gobio gobio: small slender European freshwater fish often used as bait by anglers

gudgeon (noun)	Gobio gobio (noun)
small slender European freshwater fish often used as bait by anglers	small slender European freshwater fish often used as bait by anglers
small spiny-finned fish of coastal or brackish waters having a large head and elongated tapering body having the ventral fins modified as a sucker