jmc

After converting both numbers to base 10, we subtract the values. We get $332_4=3\cdot 4^2+3\cdot 4^1+2\cdot 4^0=3(16)+3(4)+2(1)=48+12+2=62$, and $212_3=2\cdot 3^2+1\cdot 3^1+2\cdot 3^0=2(9)+1(3)+2(1)=18+3+2=23$. The difference is $62-23=\boxed{39}$.