This book is concerned with the study of neologisms in Catalan, specifically with the description of their features. It is based on the results of the research project "Neologismes per a l'actualització del diccionari normatiu" (NADIC) (studying neologisms to update the standard Catalan dictionary), financed by Institut d'Estudis Catalans, and carried out by the Network of Catalan Language Neology Observatories between 2015 and 2017. The chapters are organised into four main sections, dealing with general aspects of neology with the inclusion into a dictionary of certain types of neologisms as well as specific case studies, and questions on language variation since lexicography plays a central role in the construction of the standard language.