catchment vs swim

catchment

noun
  • A catchment area, or the people it serves. 

  • Any structure or land feature which catches and holds water; the collection of such water. 

verb
  • To divide into catchment areas. 

swim

noun
  • A part of a stream much frequented by fish. 

  • The sound, or air bladder, of a fish. 

  • An act or instance of swimming. 

  • A dizziness; swoon. 

  • A dance move of the 1960s in which the arms are moved in a freestyle swimming manner. 

verb
  • To move around freely because of excess space. 

  • To move through the water, without touching the bottom; to propel oneself in water by natural means. 

  • To glide along with a waving motion. 

  • My head was swimming after drinking two bottles of cheap wine. 

  • To cause to swim. 

  • To immerse in water to make the lighter parts float. 

  • To traverse (a specific body of water, or a specific distance) by swimming; or, to utilize a specific swimming stroke; or, to compete in a specific swimming event. 

  • To be dizzy or vertiginous; have a giddy sensation; to have, or appear to have, a whirling motion. 

  • To be overflowed or drenched. 

  • To become immersed in, or as if in, or flooded with, or as if with, a liquid 

  • To test (a suspected witch) by throwing into a river; those who floated rather than sinking were deemed to be witches. 

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