glare vs thermionic valve

glare

noun
  • A viscous, transparent substance; glair. 

  • An angry or fierce stare. 

  • A call collision; the situation where an incoming call occurs at the same time as an outgoing call. 

  • An intense, blinding light. 

  • Showy brilliance; gaudiness. 

  • A smooth, bright, glassy surface. 

verb
  • To be bright and intense, or ostentatiously splendid. 

  • To shoot out, or emit, as a dazzling light. 

  • To shine brightly. 

  • To stare angrily. 

adj
  • smooth and bright or translucent; glary 

thermionic valve

noun
  • An electronic device incorporating electrons from a glowing cathode inside an evacuated glass tube, functioning as a switch, amplifier etc. 

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