I dont agree with the above classification of Chorizo as spicy sausage. This error is probably related to the fact that Spanish Chorizo is many times seasoned with pimenton, which may be spicy (its a relative of paprika). However, in Argentina, chorizo is never spicy (in the hot spicy sense). Chorizo is available in many styles and recipes, the only of which may be spicy is the Chorizo Colorado variety.
In a parrilla, if you order chorizo, it will never be spicy.