custodian vs paramedic

custodian

noun
  • A person entrusted with the custody or care of something or someone; a caretaker or keeper. 

  • a janitor; a cleaner 

paramedic

noun
  • An individual trained to medically stabilize people through various interventions, victims of trauma or medical events outside of a hospital setting and preparing them for transport to a medical facility. 

  • An individual who is licensed at the state or national level to practice medical interventions in an emergency pre-hospital setting. 

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