Cann you learn to play keyboard and not piano or is it the same thing?

because i wanna learn to play piano but i only have a keyboard at home and i cant afford a piano

Keyboard is a good start. It is much more simple and it is a great way to train your fingers before you move on to to piano.

of course there will be a slight feeling of awkwardness at first once you play the piano. however if you're really into it , then i have no doubt that you can master the piano within months cheers k