Hi Nichole,
A Client is a business who`s buying services from freelancers to perform/finish their projects/jobs. You can also edit your account to represent the company you're working for and not as an individual. Check these helpful articles to find out how to Build and Manage Teams on your Client account.
An agency is a business that sells the services of multiple freelancers on Upwork. We've created a guide to agencies to help you decide if an agency is right for you. You can also check out this Help Article to learn more about agencies. Paying agency members straight from Upwork balance, unfortunately, isn't possible. Financial accounts have to be separate. However, you may use or add the bank account you used under your independent freelancer profile to your Agency account to access your Agency earnings.
If you have any additional questions feel free to post them here.
Thank you.
