utilon vs welfare

utilon

noun
  • A hypothetical unit measuring satisfaction. 

welfare

noun
  • Health, safety, happiness and prosperity; well-being in any respect. 

  • Such payment. 

  • Various forms of financial aid provided by the government to those who are in need of it (often called welfare assistance in UK English). 

verb
  • To provide with welfare or aid. 

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