beholder vs looker

beholder

noun
  • Someone who observes or beholds; an observer or spectator. 

  • A fictional monster in roleplaying games, a floating orb of flesh with a large mouth and many eyes on stalks. 

looker

noun
  • One that looks or is actively looking; a watcher; an observer. 

  • A person who pretends to be interested in purchasing something but has no intention of doing so. 

  • Someone or something who is remarkably good-looking. 

  • One having a specific look or appearance. 

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