boat vs low loader

boat

noun
  • A vehicle, utensil, or dish somewhat resembling a boat in shape. 

  • A craft used for transportation of goods, fishing, racing, recreational cruising, or military use on or in the water, propelled by oars or outboard motor or inboard motor or by wind. 

  • A full house. 

  • One of two possible conformations of cyclohexane rings (the other being chair), shaped roughly like a boat. 

  • The refugee boats arriving in Australian waters, and by extension, refugees generally. 

verb
  • To travel by boat. 

  • To transport in a boat. 

  • To place in a boat. 

low loader

noun
  • a lowboy semi-trailer 

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