common ginger vs Zingiber officinale

common ginger and Zingiber officinale both are nouns.

Word	Noun	Adjective	Verb	Adverb
common ginger	Yes	No	No	No
Zingiber officinale	Yes	No	No	No

As nouns, common ginger and Zingiber officinale are synonyms defined as:

common ginger and Zingiber officinale: tropical Asian plant widely cultivated for its pungent root; source of gingerroot and powdered ginger

Other synonyms of common ginger include Canton ginger, stem ginger.

common ginger (noun)	Zingiber officinale (noun)
tropical Asian plant widely cultivated for its pungent root; source of gingerroot and powdered ginger	tropical Asian plant widely cultivated for its pungent root; source of gingerroot and powdered ginger