What is Commercial Use?

If the usage of something is part of the process of you making money, then it’s generally considered a commercial use. If the purpose of the site is to, through some means or another, directly or indirectly, make you money, then it’s probably commercial use.

Are Royalty Free Images For Commercial Use?

No. Royaltyfree means that once a license fee is paid, the images may be used many times without paying additional fees, but the initial license is necessary to protect yourself and your clients.