This book presents a case study on lexical error analysis in the translation products of Arab English majors at the university level with important implications for Arabic-speaking countries. It provides detailed analyses and explanations of the main lexical areas that cause specific difficulties for these students, while also identifying their potential sources. The respective chapters discuss several areas related to the context of the research, the field of SLA, error analysis, language transfer, error taxonomies, language learning, language teaching, and translation training.