enucleate vs spell out

enucleate

verb
  • To remove the nucleus from (a cell). 

  • To extract (an object) intact from an enclosed space 

adj
  • Enucleated, having no nucleus. 

noun
  • A cell which has been enucleated 

spell out

verb
  • To form (a word) from letters; say the letters in a word. 

  • To explain in clear and simple terms; to be explicit. 

  • To replace an acronym with its expansion. 

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