punch card vs punched card

punch card and punched card both are nouns.

Word	Noun	Adjective	Verb	Adverb
punch card	Yes	No	No	No
punched card	Yes	No	No	No

As nouns, punch card and punched card are synonyms defined as:

punch card and punched card: a card on which data can be recorded in the form of punched holes

Other synonyms of punch card include Hollerith card.

punch card (noun)	punched card (noun)
a card on which data can be recorded in the form of punched holes	a card on which data can be recorded in the form of punched holes