The Germanic superstrate has had different outcomes in Spanish and Catalan. For example, Catalan fang "mud" and rostir "to roast", of Germanic origin, contrast with Spanish lodo and asar, of Latin origin; whereas Catalan filosa "spinning wheel" and pols "temple", of Latin origin, contrast with Spanish rueca and sien, of Germanic origin.

What is the origin of language elements found in Catalan and not in Spanish?