axial vs speckle

axial

noun
  • A flight feather that appears between the primaries and secondaries on some birds. 

  • A plane parallel to the surface of a tooth. 

adj
  • Belonging to the axis of the body, or to the axis of any appendage or organ 

  • Relating to, resembling, or situated on an axis 

  • In the same direction as the axis, parallel to the axis. 

  • oriented close to the axis running through the centre of a cyclohexane ring, as opposed to equatorial. See w:Axial bond. 

speckle

noun
  • A small spot or speck on the skin, plumage or foliage. 

  • Kind; sort. 

  • A cluster of interchromatin granules in a nucleus. 

  • The random distribution of light when it is scattered by a rough surface. 

verb
  • To mark with speckles. 

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