dateless vs ending

dateless

adj
  • Without a date imprinted, assigned, or associated. 

  • Out of one's head; deranged. 

  • Thick-headed. 

  • Having no date—a meeting with a lover or potential lover. 

  • Timeless; immortal 

  • Without a start; immemorial 

ending

noun
  • A termination or conclusion. 

  • The last part of something. 

  • The last morpheme of a word, added to some base to make an inflected form (such as -s in "dogs"). 

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