cardamum vs cardamon

cardamum and cardamon both are nouns.

Word	Noun	Adjective	Verb	Adverb
cardamum	Yes	No	No	No
cardamon	Yes	No	No	No

As nouns, cardamum and cardamon are synonyms defined as:

cardamum and cardamon: aromatic seeds used as seasoning like cinnamon and cloves especially in pickles and barbecue sauces

Other synonyms of cardamum include cardamom.

cardamum (noun)	cardamon (noun)
aromatic seeds used as seasoning like cinnamon and cloves especially in pickles and barbecue sauces	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