morphology vs physiology

morphology

noun
  • The form and structure of something. 

  • The study of the internal structure of morphemes (words and their semantic building blocks). 

  • The study of the form and structure of animals and plants. 

  • Mathematical morphology. 

  • The study of the structure of rocks and landforms. 

  • A description of the form and structure of something. 

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 morphology and physiology occurred in a corpus of books? (source: Google Ngram Viewer )