Computer hardware is any physical device, something that you are able to touch, and software is a collection of instructions and code installed into the computer and cannot be touched. For example, the computer monitor you are using to read this text on and the mouse you are using to navigate this web page is computer hardware. The Internet browser that allowed you to visit this page and the operating system that the browser is running on is considered software.
To some degree, software uses hardware to operate properly. A video game, which is software, uses the computer processor (CPU), memory (RAM), and video card, which is all hardware, to run. Word processing software uses the computer processor, memory, and hard drive to create documents and save them.