User blog comment:ImperiexSeed/Supernatural Mysteries/@comment-3481504-20120315222157/@comment-3481504-20120316213327

Fine, then every celestial being is an angel, plain and simple.

In all actuality, using the term "angel" could refer to cherubs, seraphs, archangels, so on and so forth.

Cool, and Cas' case is obvious, he had no wings to burn, haha.