facing vs imponderable

facing

adj
  • Diverging in the direction of travel. 

  • Positioned so as to face (in a particular direction) 

noun
  • Fabric applied to a garment edge on the underside. 

  • A powdered substance, such as charcoal or bituminous coal, applied to the face of a mould, or mixed with the sand that forms it, to give a fine smooth surface to the casting. 

  • The movement of soldiers by turning on their heels to the right, left, or about. 

  • The most external portion of exterior siding. 

  • The collar and cuffs of a military coat, commonly of a different colour from the rest of the coat. 

imponderable

adj
  • Not ponderable; without sensible or appreciable weight; incapable of being weighed. 

  • Difficult or impossible to comprehend or evaluate. 

noun
  • An imponderable question. 

  • A factor that cannot be anticipated. 

  • An imponderable substance or body; specifically, in the plural, a name formerly applied to heat, light, electricity, and magnetism. 

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