holm vs refuge

holm

noun
  • Small island, islet. 

  • 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. 

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

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

refuge

noun
  • A refuge island. 

  • A state of safety, protection or shelter. 

  • An expedient to secure protection or defence. 

  • A place providing safety, protection or shelter. 

  • Something or someone turned to for safety or assistance; a recourse or resort. 

verb
  • To return to a place of shelter. 

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