It is known that English words are classified from A1 to C2 according to the level of difficulty on the CEFR scale. Knowing which word belongs to which level is very important for candidates who want to take international exams like CEFR and IELTS. This is because candidates who want to get B2 and C1 certificates from CEFR or 7 and 8 points from IELTS do not know exactly which words to memorize or learn. This book completely solves this problem. With the vocabulary at hand, you can memorize essential words that are the basis for high results from the writing and speaking sections of international exams such as CEFR and IELTS.