be of the opinion vs glean

be of the opinion

glean

noun
  • A collection made by gleaning. 

verb
  • To collect what is left behind (grain, grapes, etc.) after the main harvest or gathering. 

  • To gather information in small amounts, with implied difficulty, bit by bit. 

  • To gather what is left in (a field or vineyard). 

  • To frugally accumulate resources from low-yield contexts. 

How often have the words be of the opinion and glean occurred in a corpus of books? (source: Google Ngram Viewer )