decrease vs low water

decrease

noun
  • An amount by which a quantity is decreased. 

  • A reduction in the number of stitches, usually accomplished by suspending the stitch to be decreased from another existing stitch or by knitting it together with another stitch. See Decrease (knitting). 

verb
  • Of a quantity, to become smaller. 

  • To make (a quantity) smaller. 

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 decrease and low water occurred in a corpus of books? (source: Google Ngram Viewer )