double talk vs rational

double talk

noun
  • Speech which combines English (or some other language) and native-sounding gibberish for humorous effect. 

  • Doublespeak. 

  • Lies, especially in a formal political statement. 

  • A situation when two people talk at the same time, causing overlapping audio signals. 

  • A simple phonetic code with a regular infix that makes meaningful speech sound unintelligible. 

rational

adj
  • Healthy or balanced intellectually; exhibiting reasonableness. 

  • Logically sound; not self-contradictory or otherwise absurd. 

  • Of an algebraic expression, capable of being expressed as the ratio of two polynomials. 

  • Expressing the type, structure, relations, and reactions of a compound; graphic; said of formulae. 

  • Of a number, capable of being expressed as the ratio of two integers. 

  • Expressing a physical object. 

  • Capable of reasoning. 

noun
  • A rational number: a number that can be expressed as the quotient of two integers. 

  • The breastplate worn by Israelite high priests. 

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