looker vs stander-by

looker

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

  • One having a specific look or appearance. 

stander-by

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