The arrangement of the words in a sentence. It may refer specifically to the length of sentences, the organization of clauses, the type of sentence (declarative, interrogative, exclamatory), or its structure (loose, periodic, simple, compound, complex). This determines the meaning of a sentence as well as its effects on the reader.
Ex: "Fishing is permitted on this river." and "Is fishing permitted on this river?" Both consist of the same six words, but entirely different meanings and intent.
The main idea or meaning, often an abstract idea upon which a work of literature is built. Relate to such matters as changes in way of life, problems of good and evil, the loss of innocence, the struggle for power, and much, much more. Are developed by the behavior of characters, the plot, and subplots in the narratives, the setting and its influence on the characters, and even the author's writing technique and use of language.