left field vs oblivion

left field

noun
  • An unexpected, bizarre, or unwatched source (especially in the phrases out of left field and from left field). 

  • An unusual or unexpected position, or a viewpoint held by very few others in contrast to the majority viewpoint (especially in the phrases out in left field and way out in left field) 

  • The part of a baseball field which is beyond the infield and to the left of a person standing on home plate and facing the pitcher. 

  • The defensive position in the outfield to the left. 

oblivion

noun
  • The state of forgetting completely, of being oblivious, unconscious, unaware, as when sleeping, drunk, or dead. 

  • A form of purgatory. 

  • The state of being completely forgotten, of being reduced to a state of non-existence, extinction, or nothingness, including through war and destruction. (Figuratively) for an area like hell, a wasteland. 

verb
  • To consign to oblivion; to efface utterly. 

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