When you "delete" a file in Windows or OSX, it's just moved to another folder (called Trash in OSX). When you "empty the trash", the file is deleted. When you delete a file in Android, it's deleted. There's no trash.
When you "delete" a file in Windows or OSX, it's just moved to another folder (called Trash in OSX). When you "empty the trash", the file is deleted. When you delete a file in Android, it's deleted. There's no trash.