Crop Tool :
Cropping is the process of removing portions of a photo to create focus or strengthen the composition. Use the Crop tool to crop and straighten photos in Photoshop. The Crop tool is non-destructive, and you can choose to retain the cropped pixels to optimize the crop boundaries later. The Crop tool also provides intuitive methods to straighten a photo while cropping.

Perspective Crop Tool :
The Perspective Crop tool lets you transform the perspective in an image while cropping. Use the Perspective Crop tool when working with images that contain keystone distortion. Keystone distortion occurs when an object is photographed from an angle rather than from a straight‑on view.