common mackerel vs Scomber scombrus

common mackerel and Scomber scombrus both are nouns.

Word	Noun	Adjective	Verb	Adverb
common mackerel	Yes	No	No	No
Scomber scombrus	Yes	No	No	No

As nouns, common mackerel and Scomber scombrus are synonyms defined as:

common mackerel and Scomber scombrus: important food fish of the northern Atlantic and Mediterranean; its body is greenish-blue with dark bars and small if any scales

Other synonyms of common mackerel include shiner.

common mackerel (noun)	Scomber scombrus (noun)
important food fish of the northern Atlantic and Mediterranean; its body is greenish-blue with dark bars and small if any scales	important food fish of the northern Atlantic and Mediterranean; its body is greenish-blue with dark bars and small if any scales