orthogonal vs proper right

orthogonal

noun
  • An orthogonal line 

adj
  • Of a square matrix: such that its transpose is equal to its inverse. 

  • Of grid graphs, board games and polyominoes: vertical or horizontal but not diagonal. 

  • Of two objects, at right angles; perpendicular to each other. 

  • Of two or more aspects of a problem, able to be treated separately; of a design, exhibiting consistency and composability. 

  • Of a pair of vectors: having a zero inner product; perpendicular. 

  • Of two or more problems or subjects, independent of or irrelevant to each other. 

  • Of a pair of elements in an ortholattice: each less than or equal to the orthocomplement of the other. 

  • Of a linear transformation: preserving its angles. 

  • Statistically independent, with reference to variates. 

proper right

noun
  • The direction which is to the right from an object's perspective, the direction 90 degrees clockwise from the front. 

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