axial vs basal

axial

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. 

noun
  • A plane parallel to the surface of a tooth. 

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

basal

adj
  • Associated with the base of an organism or structure. 

  • Basic, elementary; relating to, or forming, the base, or point of origin. 

  • In a phylogenetic tree, being a group, or member of a group, which diverged earlier. The earliest clade to branch in a larger clade. 

  • Of a minimal level that is necessary for maintaining the health or life of an organism. 

noun
  • base, bottom, minimum 

  • Any basal structure or part 

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