dendrology vs pathology

dendrology

noun
  • the study of trees and other woody plants 

pathology

noun
  • The academic biomedical specialty that advances the aspects of the biomedical sciences that allow for those clinical applications and their advancements over time. 

  • Any of several interrelated scientific disciplines that advance the aspects of the life sciences that allow for such technological applications and their advancements over time. 

  • The clinical biomedical specialty that provides microscopy and other laboratory services to clinicians (e.g., cytology, histology, cytopathology, histopathology, cytometry). 

  • Pathosis: any deviation from a healthy or normal structure or function; abnormality; illness or malformation. 

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