activator vs catalyzer

activator

noun
  • Something that activates a catalyst 

  • Any chemical or agent which regulates one or more genes by increasing the rate of transcription. 

  • A type of effector that increases the rate of enzyme-mediated reactions. 

  • A type of dopant used in phosphors and scintillators. 

  • One who, or that which, activates. 

  • An agent that enables the flotation of a mineral or minerals. 

catalyzer

noun
  • That which catalyzes. 

  • A catalytic converter. 

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