Calendula officinalis vs pot marigold

Calendula officinalis and pot marigold both are nouns.

Word	Noun	Adjective	Verb	Adverb
Calendula officinalis	Yes	No	No	No
pot marigold	Yes	No	No	No

As nouns, Calendula officinalis and pot marigold are synonyms defined as:

Calendula officinalis and pot marigold: the common European annual marigold

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

Calendula officinalis (noun)	pot marigold (noun)
the common European annual marigold	the common European annual marigold