Costumer

It appears you might be referring to "customer." A customer is someone who purchases goods or services from a business or organization. They are the people or entities that a company aims to serve, and their satisfaction is essential for the business’s success. Customers can be individuals or other businesses, and their needs and preferences influence how companies develop products, set prices, and deliver service. Building good relationships with customers helps ensure loyalty and repeat business, which are vital for sustained growth and profitability.