external vs facing

external

noun
  • The exterior; outward features or appearances. 

  • Outward appearance. 

  • Inessential or superficial features. 

  • A variable that is defined in the source code but whose value comes from some external source. 

adj
  • Relating to or denoting a medicine or similar substance for use on the outside of the body. 

  • Having existence independent of the mind. 

  • Situated near or toward the surface of the body. 

  • For or concerning students registered with and taking the examinations of a university but not resident there. 

  • Not contained in the main computer. 

  • Outside of something; on the exterior. 

  • Not intrinsic or essential. 

  • Provided by something or someone outside of the entity (object, group, company etc.) considered. 

  • Using a disk or tape drive rather than the main memory. 

  • Relating to or connected with foreign nations or institutions. 

  • Having merely the outward appearance of something. 

facing

noun
  • The most external portion of exterior siding. 

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

adj
  • Diverging in the direction of travel. 

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

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