While bit rate and baud rate are closely linked, they aren't the same thing. Bit rate is a measure of the number of data bits-- zeros and ones -- that can be transmitted in one second. A bit rate of 2 ...
But, in a literal sense, “baud” refers to the number of changes in a line condition per second. If the only changes in the line condition are binary (on and off), then bits per second equal baud. But ...