Scomberomorus cavalla vs king mackerel

Scomberomorus cavalla and king mackerel both are nouns.

Word	Noun	Adjective	Verb	Adverb
Scomberomorus cavalla	Yes	No	No	No
king mackerel	Yes	No	No	No

As nouns, Scomberomorus cavalla and king mackerel are synonyms defined as:

Scomberomorus cavalla and king mackerel: large mackerel with long pointed snout; important food and game fish of the eastern Atlantic coast southward to Brazil

Other synonyms of Scomberomorus cavalla include cavalla, cero.

Scomberomorus cavalla (noun)	king mackerel (noun)
large mackerel with long pointed snout; important food and game fish of the eastern Atlantic coast southward to Brazil	large mackerel with long pointed snout; important food and game fish of the eastern Atlantic coast southward to Brazil