Why is literature a good source of clues about “these strangers—[your] neighbors on this shrinking planet Earth.” Come on please good answers

Match the description to the term. 1. textbooks conference usage 2. elements surround a word which clarify the meaning casual usage 3. the way in which english is used context 4. family and friends frozen usage 5. friends at a football game formal usage 6. teachers and employers intimate usage 7. making an appointment usage