Mono

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Across
  1. 2. Speaking or using only one language.
  2. 6. Speech given by ‘one’ person
  3. 7. Have and control fully and exclusively
  4. 8. System of government using ‘one’ ruler
Down
  1. 1. A single lens used to correct vision in one eye
  2. 3. A train which uses ‘one’ rail instead of two tracks
  3. 4. Of using ‘one’ tone only
  4. 5. A monochrome painting comprises different shades of only one color or is done in black and white.