unable to delete an app by moving to trash. Doesn't work. Help

Mybeach70 wrote:

App is called Terminal app. Is this baked in?

You are not going to remove the Terminal.app

—it is the terminal emulator included in the macOS operating system by Apple. Terminal originated in NeXTSTEP and OPENSTEP, the predecessor operating systems of macOS. This is you command-line interface/ text-based access to the operating system,

Apps included on your Mac - Apple Support

if you are trying to free up storage, try more general house cleaning ...

How to free up storage space on your Mac - Apple Support 

Free up storage space on your Mac - Apple Support

if you are still at a loss— Try something like OmniDiskSweeper for a GUI to get a good look at itemized file size and location: OmniDiskSweeper http://www.omnigroup.com/more

Mybeach70 wrote:

I am not able to by moving it to trash. Installed "Appuninstaller" and it doesn't show the app I want to delete which was loaded thru internet.

You do not say what app...(?)

macOS baked in applications can not be removed.

App is called Terminal app. Is this baked in?

Yes. Why would you want to remove it? Or, what goal are you seeking in removing it?