Scotch marigold vs common marigold

Scotch marigold and common marigold both are nouns.

Word	Noun	Adjective	Verb	Adverb
Scotch marigold	Yes	No	No	No
common marigold	Yes	No	No	No

As nouns, Scotch marigold and common marigold are synonyms defined as:

Scotch marigold and common marigold: the common European annual marigold

Other synonyms of Scotch marigold include Calendula officinalis, pot marigold, ruddles.

Scotch marigold (noun)	common marigold (noun)
the common European annual marigold	the common European annual marigold