The word "Public Card" may have different meanings in different contexts. Here are some common explanations:

Credit Card Level: In the credit card field, Puka refers to Regular or standard credit card. Compared with high-level credit cards such as gold cards and platinum cards, ordinary cards may have relatively fewer credit limits, preferential treatments and services. However, specific benefits and features may vary by card issuer and credit card product.

Membership card types: Some merchants or organizations may provide different types of membership cards, among which regular cards may be the basic membership level. Holding a regular card may enjoy certain membership privileges, such as discounts, points, etc.

Ordinary cards: Ordinary cards can also refer to ordinary cards, as opposed to cards with special designs or functions. For example, in a trading card game, common cards may be common cards with no special effects.