incline vs low water

incline

noun
  • A portal of a subway tunnel. 

  • A slope. 

verb
  • To bend or move (something) out of a given plane or direction, often the horizontal or vertical. 

  • To tend to do or believe something, or move or be moved in a certain direction, away from a point of view, attitude, etc. 

  • To slope. 

low water

noun
  • The temporary situation of having little money. 

  • The lowest stage of a river. 

  • The location of low tide in a coastal area. 

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