galangal vs Cyperus longus

galangal and Cyperus longus both are nouns.

Word	Noun	Adjective	Verb	Adverb
galangal	Yes	No	No	No
Cyperus longus	Yes	No	No	No

As nouns, galangal and Cyperus longus are synonyms defined as:

galangal and Cyperus longus: European sedge having rough-edged leaves and spikelets of reddish flowers and aromatic roots

Other synonyms of galangal include galingale.

galangal (noun)	Cyperus longus (noun)
southeastern Asian perennial with aromatic roots	European sedge having rough-edged leaves and spikelets of reddish flowers and aromatic roots
European sedge having rough-edged leaves and spikelets of reddish flowers and aromatic roots