Elettaria cardamomum vs cardamom

Elettaria cardamomum and cardamom both are nouns.

Word	Noun	Adjective	Verb	Adverb
Elettaria cardamomum	Yes	No	No	No
cardamom	Yes	No	No	No

As nouns, Elettaria cardamomum and cardamom are synonyms defined as:

Elettaria cardamomum and cardamom: rhizomatous herb of India having aromatic seeds used as seasoning

Other synonyms of Elettaria cardamomum include cardamon.

Elettaria cardamomum (noun)	cardamom (noun)
rhizomatous herb of India having aromatic seeds used as seasoning	aromatic seeds used as seasoning like cinnamon and cloves especially in pickles and barbecue sauces
	rhizomatous herb of India having aromatic seeds used as seasoning