Can you hide specific apps on iPad?

You can hide any app except the settings app. Most apps can simply be removed by pressing and holding on an app until it jiggles and then tapping the x to remove it. This will completely remove it from your iPad.

You can also use the allow/disallow function of a Mobile Device Management platform to hide apps. If they are disallowed, they will disappear, will be unusable, but can still be on the device.

If you are hoping to achieve something like the iPhone has with Apps Library, unfortunately, this isn't possible.

A Mobile Device Management system is software that a company or school might use to manage all of the mobile devices it owns. It allows control to be limited to the central system. Typically, a normal user would not have need of such software.