openness vs perfidy

openness

noun
  • Lack of secrecy; candour, transparency. 

  • The degree to which a system operates with distinct boundaries across which exchange occurs capable of inducing change in the system while maintaining the boundaries themselves. 

  • Accommodating attitude or opinion, as in receptivity to new ideas, behaviors, cultures, peoples, environments, experiences, etc., different from the familiar, conventional, traditional, or one's own. 

  • The degree to which a person, group, organization, institution, or society exhibits this liberal attitude or opinion. 

  • degree of accessibility to view, use, and modify in a shared environment with legal rights generally held in common and preventing proprietary restrictions on the right of others to continue viewing, using, modifying and sharing. 

perfidy

noun
  • A state or act of violating faith or allegiance; violation of a promise or vow, or of trust 

  • Specifically, in warfare, an illegitimate act of deception, such as using symbols like the Red Cross or white flag in a false claim of surrender to gain proximity to an enemy for purposes of attack. 

  • A state or act of deceit. 

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