look upon vs undersee

look upon

verb
  • To gaze at something; to look on. 

  • To consider or regard something in a specific manner. 

undersee

verb
  • To look intently into; examine; inspect. 

  • To see or look under or below; see below the surface of. 

  • To neglect; fail to see properly or adequately; turn a blind eye to; ignore. 

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