Gobio gobio vs gudgeon

Gobio gobio and gudgeon both are nouns.

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

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

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

Gobio gobio (noun)	gudgeon (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