frigid vs unemotional

frigid

adj
  • Chilly in manner; lacking affection or zeal; impassive. 

  • Sexually unresponsive, especially of a woman. 

  • Very cold; lacking warmth; icy. 

unemotional

adj
  • Showing little or no feeling. 

  • Reasoned and objective, involving reason or intellect rather than feelings. 

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