stagnate vs ump

stagnate

verb
  • To be or become foul from standing. 

  • To cease to develop, advance, or change; to become idle. 

  • To cease to flow or run. 

ump

verb
  • To act as an umpire (in). 

noun
  • An umpire. 

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