diagnosis vs physiology

diagnosis

noun
  • The identification of the nature and cause of something (of any nature). 

  • A written description of a species or other taxon serving to distinguish that species from all others; especially a description written and published in Latin. 

  • The identification of the nature and cause of an illness. 

verb
  • Synonym of diagnose 

physiology

noun
  • A branch of biology that deals with the functions and activities of life or of living matter (as organs, tissues, or cells) and of the physical and chemical phenomena involved. 

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