bog vs holm

bog

noun
  • A little elevated spot or clump of earth, roots, and grass, in a marsh or swamp. 

  • The acidic soil of such areas, principally composed of peat; marshland, swampland. 

  • Confusion, difficulty, or any other thing or place that impedes progress in the manner of such areas. 

  • A place to defecate: originally specifically a latrine or outhouse but now used for any toilet. 

  • An act or instance of defecation. 

  • An area of decayed vegetation (particularly sphagnum moss) which forms a wet spongy ground too soft for walking; a marsh or swamp. 

verb
  • To make a mess of something. 

  • To be prevented or impeded from making progress, to become stuck. 

  • To sink or submerge someone or something into bogland. 

  • To prevent or slow someone or something from making progress. 

  • To defecate, to void one's bowels. 

  • To cover or spray with excrement. 

  • To sink and stick in bogland. 

  • To go away. 

holm

noun
  • Rich flat land near a river, prone to being completely flooded; a river-meadow; bottomland. 

  • Any small island, but especially one near a larger island or the mainland, sometimes with holly bushes; an islet. Often the word is used in Norse-influenced place-names. See also holme. 

  • A common evergreen oak of Europe, Quercus ilex; the holm oak. 

  • Small island, islet. 

  • An island in a lake, river or estuary; an eyot. 

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