Royalty free vectors are a type of vector that’s licensed so you can use it without having to buy exclusive rights to the design, which is much more expensive. Put another way, a Royalty Free license grants you the right to use the vector in multiple ways, without having to buy the property of the image itself.
There are sites where you can find vectors to download for free, like Vexels. On Vexels you’ll find free vectors for everything, and a lot of them are free.
Free vectors are vectorial images that can be downloaded for free on different graphic stock sites, like Vexels for example. You can find thousands of free vectors like backgrounds, icons, logos, and more.