external vs look

external

noun
  • Outward appearance. 

  • Inessential or superficial features. 

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

  • The exterior; outward features or appearances. 

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. 

look

noun
  • Physical appearance, visual impression. 

  • A facial expression. 

  • The action of looking; an attempt to see. 

intj
  • Pay attention. 

verb
  • As a transitive verb, often in the imperative; chiefly takes relative clause as direct object. 

  • To make sure of, to see to. 

  • To look at a pitch as a batter without swinging at it. 

  • To give an appearance of being. 

  • To express or manifest by a look. 

  • To face or present a view. 

  • To expect or anticipate. 

  • As an intransitive verb, often with "at". 

  • To search for, to try to find. 

  • To appear, to seem. 

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