gland vs secretor

gland

noun
  • A specialized cell, group of cells, or organ of endothelial origin in the human or animal body that synthesizes a chemical substance, such as hormones or breast milk, and releases it, often into the bloodstream (endocrine gland) or into cavities inside the body or its outer surface (exocrine gland). 

  • A gland used around a tap, valve or faucet. 

  • A gland used around a ship’s propeller shaft. 

  • A structure resembling a gland, especially a lymph node. 

  • A secretory structure on the surface of an organ. 

secretor

noun
  • A cell, tissue, or organ (such as a gland) that produces a bodily secretion. 

  • A person who secretes comparatively large quantities of blood-group antigens in their bodily fluids. 

  • A person who or animal that secretes (emits a bodily fluid). 

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