Actually it's not that hard

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Across
  1. 3. a situation in which there is no war or fighting
  2. 5. a boy who helps the bride as part of wedding ceremony
  3. 8. someone you work with, do an activity with, or share something with
  4. 9. a physical or mental condition that makes it difficult for someone to use a part of their body properly, or to learn normally
  5. 11. the place or situation in which something begin to exist
  6. 13. a feeling of admiring someone or what they do, especially because of their personal qualities, knowledge or skills
  7. 14. a large group of people who have gathered together to do something, for example to watch something or protest about something
  8. 15. someone that you do not know
Down
  1. 1. several people or things that are all together in the same place
  2. 2. someone who hates you and wants to harm you
  3. 4. someone who lives next to you or near you
  4. 6. a dog that helps blind people
  5. 7. always telling other people what to do, in a way that is annoying
  6. 10. to talk in friendly informal way, especially about things that are not important
  7. 12. the child of your uncle or aunt