directional vs indicant

directional

noun
  • Something that indicates direction, such as a vehicle's turn signal. 

adj
  • Indicating direction. 

  • Of or relating to guidance or help. 

indicant

noun
  • That which indicates or points out. 

adj
  • Serving to point out, as a remedy; indicating. 

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