Which term describes the action of giving money for goods or services?

The term that best describes the action of giving money for goods or services is "purchase." When you purchase something, you are engaging in a transaction where money is exchanged for products or services. This transaction encompasses not just the action of paying, but also the entire process of acquiring something in return for payment.

While "pay" might seem relevant, it specifically refers to the act of providing money rather than the overall concept of acquiring goods or services. "Order" implies a request or demand for something that may not yet involve payment, and "request" simply denotes the act of asking for something to be provided. Consequently, "purchase" accurately captures the complete transaction process, making it the most fitting term in this context.