Like other languages, Catalan has a large list of learned words from <answer>Greek and Latin</answer>. This process started very early, and one can find such examples in Ramon Llull's work. On the fourteenth and fifteenth centuries Catalan had a number of Greco-Latin learned words much superior to other Romance languages, as it can be attested for example in Roís de Corella's writings.
Where does Catalan get a lot of its learned words?
Greek and Latin