Bi/Duo

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Across
  1. 2. Able to speak two languages
  2. 3. Front of upper arm, containing two muscles
  3. 6. a piece of music that is performed by two singers or musicians
  4. 7. A legislature consisting of two parts, or houses
  5. 9. intentional deceit in speech or conduct, "two faced"
Down
  1. 1. a vehicle with two wheels
  2. 3. occurring every two years
  3. 4. feeling like someone is part of two groups
  4. 5. a building that is divided into two separate homes
  5. 8. fight between two people