escort vs vanguard

escort

noun
  • An accompanying person in a social gathering, etc. 

  • A sex worker who does not operate in a brothel, but with whom clients make appointments; a call girl or male equivalent. 

  • A guard who travels with a dangerous person, such as a criminal, for the protection of others. 

  • Protection, care, or safeguard on a journey or excursion. 

  • A group of people or vehicles, generally armed, who go with a person or people of importance to safeguard them on a journey or mission. 

  • An accompanying person in such a group. 

  • A group of people attending as a mark of respect or honor. 

verb
  • To go with someone as a partner, for example on a formal date. 

  • To attend to in order to guard and protect; to accompany as a safeguard (for the person escorted or for others); to give honorable or ceremonious attendance to 

  • To accompany (a person) in order to compel them to go somewhere (e.g. to leave a building). 

vanguard

noun
  • The person(s) at the forefront of any group or movement. 

  • The leading units at the front of an army or fleet. 

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