Can i change my laptop keyboard with an old one ?

I spilled liquid on my Acer Aspire 4736ZG Keyboard Replacement Brand New US Layout and now most of the keys don't work and some type other letters when I touch a key. It's not just the keys, its the inside of the keyboard that's the problem. Can I take the keyboard out and replace it with a keyboard from another laptop? I think it may fit in the space.

Or, can I buy a Acer Keyboard that just plugs in? to the usb port or something?
how would i know which one to buy?