towboat vs venture

towboat

noun
  • A steamer used for towing other vessels; a tug. 

  • A tugboat. 

  • A squat powerful boat designed to push barges. 

  • A vessel constructed for being towed, such as a canal boat. 

venture

noun
  • The thing risked; especially, something sent to sea in trade. 

  • A risky or daring undertaking or journey. 

  • An event that is not, or cannot be, foreseen. 

verb
  • To put or send on a venture or chance. 

  • to dare to engage in; to attempt without any certainty of success. Used with at or on 

  • To confide in; to rely on; to trust. 

  • To risk or offer. 

  • To undertake a risky or daring journey. 

  • To say something. 

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