cash card vs cashcard

cash card and cashcard both are nouns.

Word	Noun	Adjective	Verb	Adverb
cash card	Yes	No	No	No
cashcard	Yes	No	No	No

As nouns, cash card and cashcard are synonyms defined as:

cash card and cashcard: a payment card that entitles the holder to receive cash

cash card (noun)	cashcard (noun)
a payment card that entitles the holder to receive cash	a payment card that entitles the holder to receive cash