guffaw vs have a laugh

guffaw

verb

  • To laugh boisterously. 

noun

  • A boisterous laugh. 

have a laugh

verb

  • To laugh. 

  • To joke; kid around. 

  • To enjoy oneself; have fun. 

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