or vs then again

or

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

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

  • 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. 

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

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

noun
  • or 

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

then again

adv
  • From another point of view; on the other hand; on second thought; again. 

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