Polar Covalent.
Yes a compound can be both if it has polar bonds that are not matched on the opposite side by the same polar bond.
NO is a non-polar covalent compound because the difference in electronegativites is very less between the two elements.
It is polar covalent because these two elements are not the same.
Because oxygen is much more electronegative than carbon, the bonding in CO (carbon monoxide) is a polar covalent.