Acanthus mollis vs sea holly

Acanthus mollis and sea holly both are nouns.

Word	Noun	Adjective	Verb	Adverb
Acanthus mollis	Yes	No	No	No
sea holly	Yes	No	No	No

As nouns, Acanthus mollis and sea holly are synonyms defined as:

Acanthus mollis and sea holly: widely cultivated southern European acanthus with whitish purple-veined flowers

Other synonyms of Acanthus mollis include bear's breech, bear's breeches.

Acanthus mollis (noun)	sea holly (noun)
widely cultivated southern European acanthus with whitish purple-veined flowers	European evergreen eryngo with twisted spiny leaves naturalized on United States east coast; roots formerly used as an aphrodisiac
	widely cultivated southern European acanthus with whitish purple-veined flowers