sea anemone vs anemone

sea anemone and anemone both are nouns.

Word	Noun	Adjective	Verb	Adverb
sea anemone	Yes	No	No	No
anemone	Yes	No	No	No

As nouns, sea anemone and anemone are synonyms defined as:

sea anemone and anemone: marine polyps that resemble flowers but have oral rings of tentacles; differ from corals in forming no hard skeleton

sea anemone (noun)	anemone (noun)
marine polyps that resemble flowers but have oral rings of tentacles; differ from corals in forming no hard skeleton	marine polyps that resemble flowers but have oral rings of tentacles; differ from corals in forming no hard skeleton
	any woodland plant of the genus Anemone grown for its beautiful flowers and whorls of dissected leaves