This book is not a dictionary in the usual sense that provides an explanation for a keyword; it is more than that - a dual book: on one hand, a botanical textbook for teaching and learning, and on the other hand, a reference book that helps the learner approach a subject area or a question from various perspectives. It consists of two parts: a text section and a question section. This structure facilitates the necessary learning and, above all, the repetition of what has been understood and learned.