consultant vs part-time

consultant

noun
  • A person or party that is consulted. 

  • A person whose occupation is to be consulted for their expertise, advice, service or help in an area or specialty; a party whose business is to be similarly consulted. 

  • A senior hospital-based physician or surgeon who has completed all specialist training and has been placed on the specialist register in their chosen speciality, roughly equivalent to an attending physician in North America. 

part-time

adj
  • For, during, or involving less than the normal time for some activity, especially the number of hours an employee works. 

How often have the words consultant and part-time occurred in a corpus of books? (source: Google Ngram Viewer )