pandanus vs lauhala

pandanus and lauhala both are nouns.

Word	Noun	Adjective	Verb	Adverb
pandanus	Yes	No	No	No
lauhala	Yes	No	No	No

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

pandanus: any of various Old World tropical palmlike trees having huge prop roots and edible conelike fruits and leaves like pineapple leaves
lauhala: Polynesian screw pine

Other hyponyms of pandanus include Pandanus tectorius, textile screw pine.

pandanus (noun)	lauhala (noun)
any of various Old World tropical palmlike trees having huge prop roots and edible conelike fruits and leaves like pineapple leaves	Polynesian screw pine
fiber from leaves of the pandanus tree; used for woven articles (such as mats)