a la mode vs happening

a la mode

adj
  • Fashionable; in the current style or fashion. 

  • Served with ice cream. 

  • Of beef: larded and stewed with vegetables. 

adv
  • In a particular style or fashion. 

happening

adj
  • Busy, lively; vibrant, dynamic; fashionable. 

  • Trendy, up-to-the-minute. 

noun
  • Something that happens. 

  • A spontaneous or improvised event, especially one that involves audience participation. 

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