rare, unusual

a calling card, a business card / (card games) a hand of cards, the cards in one's hand / a nametag

(rare, possibly archaic) a letter, a note, an epistle (written message)

(rare, possibly archaic) a nametag / (rare, possibly archaic) a letter, a note, an epistle (written message) / (rare, possibly archaic) a calling card, a business card

there are many, there is much, there are numerous

many, much

multi-

card / (uncommon) playing card

curd

(computer hardware) a video card