alveolate vs deep-set

alveolate

adj
  • Having a structure containing honeycomb-like cavities. 

noun
  • A member of a grouping of protists comprising the ciliates, sporozoa and dinoflagellates. 

deep-set

adj
  • Set deeply below a surface, as on a face. 

  • firmly in place; long-standing 

How often have the words alveolate and deep-set occurred in a corpus of books? (source: Google Ngram Viewer )