anchorage vs freeboard

anchorage

noun
  • The set of anchors belonging to a ship. 

  • That into which something is anchored or fastened. 

  • Something on which one may depend for security; ground of trust. 

  • The retreat of a hermit, or anchorite. 

  • A harbor, river, or offshore area that can accommodate a ship at anchor, either for quarantine, queuing, or discharge. 

  • The act of anchoring, or the condition of lying at anchor. 

  • The surgical fixation of prolapsed organs. 

  • A fee charged for anchoring. 

freeboard

noun
  • The vertical distance between the waterline and the uppermost watertight deck of a vessel. 

  • The distance between a water level and the top of something that contains or restrains it (such as a dam). 

  • The distance between the top of sea ice and the water level. 

  • A type of skateboard which simulates the movement of a snowboard when used on a downhill coarse, allowing snowboarding techniques, which has an addition of two centerline casters that extend below the traditional skateboard wheels and bogies. 

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