anemone vs actinian

anemone and actinian both are nouns.

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

As nouns, actinian is a hyponym of anemone; that is, actinian is a word with a more specific, narrower meaning than anemone:

anemone: marine polyps that resemble flowers but have oral rings of tentacles; differ from corals in forming no hard skeleton
actinian: any sea anemone or related animal

Other hyponyms of anemone include actinia, actiniarian.

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