The study of competition in verb formation has mainly focused on the identification of the restrictions governing the domains of application of the competing patterns. However, few studies have focused on the coexistence of two forms with the same base and meaning but derived through different patterns. This book aims to describe the resolution of competition in verb formation by combining lexicographic and corpus resources and the information provided by derivational paradigms. The results obtained are twofold. Methodologically, the combination of various resources allows for a better assessment of competition. Regarding the profile of competition, the results show that it is diverse, as illustrated by the variety of patterns involved, the meaning expressed and the outcomes of competition.