Like other languages, Catalan has a large list of learned words from Greek and Latin. 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.
When did Catalan have a greater number of Greco-Latin words than other Romance languages?
fourteenth and fifteenth centuries