bastion vs supporter

bastion

noun
  • A person, group, or thing, that strongly defends some principle. 

  • A well-fortified position; a stronghold or citadel. 

  • A projecting part of a rampart or other fortification. 

  • Any large prominence; something that resembles a bastion in size and form. 

verb
  • To furnish with a bastion. 

supporter

noun
  • A person who supports, promotes, advocates or champions a cause, movement, or political party; an adherent. 

  • A person who provides moral or physical support to another; an attendant participating in a ceremony or procession. 

  • Someone who is a fan of a certain sports team or sportsperson. 

  • A garter worn around the leg to support a sock or stocking. 

  • Something that supports a structure such as a building or a sculpture. 

  • An animal or figure that supports a shield in a coat of arms. 

  • Something that supports another thing. 

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