Which term best defines someone who purchases goods or services?

The term that best defines someone who purchases goods or services is "consumer." A consumer is an individual who buys products or services for personal use. This definition emphasizes the end-user aspect of purchasing, highlighting that consumers are not just making transactions but actively using the goods and services they acquire.

While "customer" can also refer to someone who purchases goods or services, it often implies a more transactional relationship, such as someone who buys from a specific business or store. This term can encompass a broader range of purchasing scenarios, including occasional buyers or those who might not use the product personally.

"Client" typically refers to someone who engages with a professional service provider, often in a more ongoing relationship, such as legal or consulting services, rather than simply purchasing products.

"Subscriber" specifically indicates someone who has signed up for regular access to a service or product, usually in a subscription model, which entails a different kind of purchasing behavior and relationship.

Thus, "consumer" is the most accurate term that captures the essence of someone buying goods or services for personal utilization.