impression vs perception

impression

noun
  • The vivid perception of something as it is experienced, in contrast to ideas or thoughts drawn from memory or the imagination. 

  • set of copies of a publication printed at one time having the same content, layout, pagination, etc. 

  • The indentation or depression made by the pressure of one object on or into another. 

  • An online advertising performance metric representing an instance where an ad is shown once. 

  • A vague recalling of an event, a belief. 

  • An outward appearance. 

  • A print on paper from a wood block, metal plate, etc. 

  • An impersonation, an imitation of the mannerisms of another individual. 

  • The first coat of colour, such as the priming in house-painting etc. 

  • The overall effect of something, e.g., on a person. 

verb
  • To manipulate a blank key within a lock so as to mark it with impressions of the shape of the lock, which facilitates creation of a duplicate key. 

perception

noun
  • Conscious understanding of something. 

  • That which is detected by the five senses; not necessarily understood (imagine looking through fog, trying to understand if you see a small dog or a cat); also that which is detected within consciousness as a thought, intuition, deduction, etc. 

  • Vision (ability) 

  • The organisation, identification and interpretation of sensory information. 

  • Acuity 

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