nor vs or

nor

conj
  • Used to introduce a further negative statement. 

  • A function word introducing each except the first term of a series, indicating none of them is true. 

  • Than. 

  • And... not (introducing a negative statement, without necessarily following one). 

or

conj
  • Otherwise (a consequence of the condition that the previous is false). 

  • Connects at least two alternative words, phrases, clauses, sentences, etc., each of which could make a passage true. 

  • Connects two equivalent names. 

  • An operator denoting the disjunction of two propositions or truth values. There are two forms, the inclusive or and the exclusive or. 

  • Counts the elements before and after as two possibilities. 

adj
  • Of gold or yellow tincture on a coat of arms. 

noun
  • or 

  • The gold or yellow tincture on a coat of arms. 

prep
  • Before; ere. Followed by "ever" or "ere". 

How often have the words nor and or occurred in a corpus of books? (source: Google Ngram Viewer )