This book focuses on the major concerns and issues that Spanish English learners face. This was possible by focusing on the erroneous vocabulary and grammar structure similarities. Identifying these errors may benefit a significant percentage of exam students who write standard English examinations, workers whose jobs require communication in English, and people who enjoy travelling. The book is divided into two sections, i.e., grammar and vocabulary, which are used in sentences and explain where they contradict the Spanish language. These issues can be found at various levels of students due to the strong influence of not only the effect of false cognates (informal false friends), which is colloquial, but also that of interlingual homophones, homographs, and homonyms, which most of the time come from different word groups when an English word is translated from Spanish.