I study about Definition and Classification with Dr. Usa Noytim. it is a statement of the meaning of a term (a word, phrase, or other set of symbols). Definitions can be classified into two large categories, in tensional definitions (which try to give the essence of a term) and extensional definitions (which list every single object that a term describes). A term may have many different senses and multiple meanings, and thus require multiple definitions. And the another is a category into which something is put. Things is the study of our day, if we practice observing and analyze the story, we can identify and organize into categories out clearly. Things difficulty of learning if we do not pay attention to it, we can not analyze and deconstruct out. Issues of class today may be rare because 'we are very much part of the modified should improve English reading and pronunciation because many people do not pronounce correctly. The attitude of us have the feeling that happy to learn of this.