Are these basically the same thing if I make the ganache to be firm enough when it dries?

tfl

Pourable fondant and ganache are different. Ganache is essentially whip cream and chocolate. Pourable fondant is, of course, icing sugar mixed with water and corn syrup. Were you perhaps thinking of the pourable ganache? Then yes, it is essentially the same as the ganache that you use to crumb coat, but you do not let it thicken and when you pour it on , it hardens. It is also called a choc cream glaze. Here is a link with recipes:
http://www.cakecentral.com/cake-decorating-ftopict-333013-.html&sid=40880efc7c43a8005c92ba9496ab04f1

Thank you so much!

Thank you so much!