Scotch marigold vs pot marigold

Scotch marigold and pot marigold both are nouns.

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

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

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

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