1. Anglo-Frisian Dialects
2. Norse, Celtic, Latin
3. Roots
4. Dictionary
5. Thesaurus
6. Encyclopedia
7. People use foreign words for emphasizing a matter, or just to make the conversation fun. They are used only during informal conversations.
True. An author will only mention a famous person/event assuming his/her audience will be familiar with them/it.
Pig-headed :) hope that helped!!