fashionable vs in use

fashionable

adj
  • Characteristic of or influenced by a current popular trend or style. 

  • Established or favoured by custom or use; current; prevailing at a particular time. 

noun
  • A fashionable person; a fop. 

in use

prep
  • Currently being used. 

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