alone vs singular

alone

adj
  • By oneself, solitary. 

  • Lacking peers who share one's beliefs, experiences, practices, etc. 

adv
  • Not requiring anything further; merely. 

  • By oneself; apart from, or exclusive of, others; solo. 

  • Without outside help. 

  • Used to emphasize the size or extent of something by selecting a subset. 

  • Not permitting anything further; exclusively. 

singular

adj
  • Referring to only one thing or person. 

  • Being the only one of the kind; unique. 

  • Distinguished by superiority: peerless, unmatched, eminent, exceptional, extraordinary. 

  • Having the property that the matrix of coefficients of the new variables has a determinant equal to zero. 

  • Out of the ordinary; curious. 

  • Each; individual. 

  • Being only one of a larger population. 

  • Not equal to its own cofinality. 

  • Having no inverse. 

noun
  • A form of a word that refers to only one person or thing. 

  • That which is not general; a specific determinate instance. 

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