purau vs hibiscus

purau and hibiscus both are nouns.

Word	Noun	Adjective	Verb	Adverb
purau	Yes	No	No	No
hibiscus	Yes	No	No	No

As nouns, hibiscus is a hypernym of purau; that is, hibiscus is a word with a broader meaning than purau:

purau: shrubby tree widely distributed along tropical shores; yields a light tough wood used for canoe outriggers and a fiber used for cordage and caulk; often cultivated for ornament
hibiscus: any plant of the genus Hibiscus

purau (noun)	hibiscus (noun)
shrubby tree widely distributed along tropical shores; yields a light tough wood used for canoe outriggers and a fiber used for cordage and caulk; often cultivated for ornament	any plant of the genus Hibiscus