beside the point vs incidentally

beside the point

adv

  • Irrelevantly, off-topic. 

adj

  • Irrelevant, moot. 

incidentally

adv

  • In an incidental manner; not of central or critical importance. 

  • By chance; in an unplanned way. 

  • Parenthetically, by the way. 

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