cronk vs frog in one's throat

cronk

noun
  • The honking sound of a goose. 

  • A hill or barrow. 

verb
  • To honk like a goose. 

frog in one's throat

noun
  • Hoarseness or the need to cough. 

  • Any temporary physical difficulty in speaking. 

How often have the words cronk and frog in one's throat occurred in a corpus of books? (source: Google Ngram Viewer )