overfill vs plethora

overfill

noun
  • An instance of overfilling. 

verb
  • To fill beyond capacity or beyond what is appropriate. 

plethora

noun
  • An excessive amount or number; an abundance. 

  • Excess of blood in the skin, especially in the face and especially chronically. 

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