bush vs heathland

bush

noun
  • Tracts of land covered in natural vegetation that are largely undeveloped and uncultivated. 

  • A mechanical attachment, usually a metallic socket with a screw thread, such as the mechanism by which a camera is attached to a tripod stand. 

  • The wild forested areas of Canada; upcountry. 

  • An area of New Zealand covered in forest, especially native forest. 

  • A woodlot or bluff on a farm. 

  • A shrub or branch, properly, a branch of ivy (sacred to Bacchus), hung out at vintners' doors, or as a tavern sign; hence, a tavern sign, and symbolically, the tavern itself. 

  • A thick washer or hollow cylinder of metal. 

  • A shrub cut off, or a shrublike branch of a tree. 

  • A person's pubic hair, especially a woman's. 

  • Amateurish behavior, short for "bush league behavior" 

  • A woody plant distinguished from a tree by its multiple stems and lower height, being usually less than six metres tall; a horticultural rather than strictly botanical category. 

  • A piece of copper, screwed into a gun, through which the venthole is bored. 

  • The tail, or brush, of a fox. 

  • The countryside area of Australia that is less arid and less remote than the outback; loosely, areas of natural flora even within conurbations. 

adj
  • Not skilled; not professional; not major league. 

adv
  • Towards the direction of the outback. 

verb
  • To branch thickly in the manner of a bush. 

  • To set bushes for; to support with bushes. 

  • To become bushy (often used with up). 

  • To use a bush harrow on (land), for covering seeds sown; to harrow with a bush. 

  • To furnish with a bush or lining; to line. 

heathland

noun
  • A tract of scrubland habitats characterised by open, low growing woody vegetation, found on mainly infertile acidic soils. Similar to moorland but with warmer and drier climate. 

How often have the words bush and heathland occurred in a corpus of books? (source: Google Ngram Viewer )