Cyperus longus vs galangal

Cyperus longus and galangal both are nouns.

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

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

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

Other synonyms of Cyperus longus include galingale.

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