sea holm vs sea holly

sea holm and sea holly both are nouns.

Word	Noun	Adjective	Verb	Adverb
sea holm	Yes	No	No	No
sea holly	Yes	No	No	No

As nouns, sea holm and sea holly are synonyms defined as:

sea holm and sea holly: European evergreen eryngo with twisted spiny leaves naturalized on United States east coast; roots formerly used as an aphrodisiac

Other synonyms of sea holm include Eryngium maritimum, sea eryngium.

sea holm (noun)	sea holly (noun)
European evergreen eryngo with twisted spiny leaves naturalized on United States east coast; roots formerly used as an aphrodisiac	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