gander vs peek

gander

noun
  • A glance, look. 

  • A fool, simpleton. 

  • A man living apart from his wife. 

  • A male goose. 

verb
  • ramble, wander 

peek

noun
  • A quick glance or look. 

verb
  • To look slyly, or with the eyes half closed, or through a crevice; to peep. 

  • To be only slightly, partially visible, as if peering out from a hiding place. 

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