This book presents an interesting new perspective on the study of the lexicon, examining ways in which insights from translation and language learning can be viewed as complementary. The contributors bring together a range of expertise including research on the mental lexicon, second language acquisition research, translation studies and practice, terminology, language teaching and lexicography. The lexicon, often considered to be the poor relation of grammar, has recently received more attention from theoretical and applied linguists. This book is a part of the trend to explore the rich potential of this field for the benefit of the translator or lexicographer, as well as the language learner and the teacher.