1995 Saturn SC2

Noises problem
1995 Saturn SC2 Front Wheel Drive Manual alot miles

There is a knocking sound and grinding sound coming from underneath my car. I know the grinding is my breaks. But When I hit the brakes it starts to knock. I also have a sound coming from the front I think, underneath that is a loud obnoxious sound that sounds kind of knocky/screechy. I'm not sure what it is. My brother suggested ball bearings. What do you think the problem could be?
April 25, 2010.

Brakes would make all kind of noises and knocking
And should start by checking the brakes and replacing as needed
Bearing would make howling sounds like an airplane effect and sound may fade away as you turn steering a bit to left or right

Apr 25, 2010.