coo vs ribbit

coo

noun
  • The murmuring sound made by a dove or pigeon. 

  • An expression of pleasure made by a person. 

verb
  • To speak in an admiring fashion, to be enthusiastic about. 

  • To make a soft murmuring sound, as a pigeon. 

intj
  • An expression of approval, fright, surprise, etc. 

adj
  • Cool. 

ribbit

noun
  • The vocal sound made by a frog or toad. 

intj
  • The vocal sound made by a frog or toad. 

  • Used to anonymously and disrespectfully break silence, as in educational or ceremonial settings 

verb
  • To make the sound of a frog or toad. 

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