galangal vs Alpinia galanga

galangal and Alpinia galanga both are nouns.

Word	Noun	Adjective	Verb	Adverb
galangal	Yes	No	No	No
Alpinia galanga	Yes	No	No	No

As nouns, galangal and Alpinia galanga are synonyms defined as:

galangal and Alpinia galanga: southeastern Asian perennial with aromatic roots

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