frothy vs sudsy

frothy

adj
  • Foamy or churned to the point of becoming infused with bubbles. 

  • lightweight; lacking depth or substance 

  • Highly speculative; having high risk and high return. 

noun
  • A serving of beer. 

sudsy

adj
  • Having suds; having froth or lather like soapy water. 

  • Soapy; resembling a soap opera. 

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