thrumming vs whirring

thrumming

noun

  • The sound or action of something that thrums. 

whirring

noun

  • A whirr, the sounds of a whirr. 

adj

  • Producing a whirr; giving off a whirring noise. 

  • Spinning rapidly. 

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