skiff vs wherry

skiff

noun
  • A small flat-bottomed open boat with a pointed bow and square stern. 

  • Any of various types of boats small enough for sailing or rowing by one person. 

  • A light, fleeting shower of rain or snow, or gust of wind, etc. 

  • A (typically light) dusting of snow or ice (or dust, etc) (on ground, water, trees, etc). 

  • An act of slightly pruning tea bushes, placing new leaves at a convenient height without removing much woody growth. 

verb
  • To fall lightly or briefly, and lightly cover the ground (etc). 

  • To navigate in a skiff. 

  • To cut (a tea bush) to maintain the plucking table. 

wherry

noun
  • A light ship used to navigate inland waterways. 

  • A flat-bottomed vessel once employed by British merchants, notably in East Anglia, sometimes converted into pleasure boats. 

  • A liquor made from the pulp of crab apples after the verjuice is extracted. 

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