a good few vs much

a good few

det

  • A number of, more than a bare few. 

much

det

  • Many ( + plural countable noun). 

  • A large amount of. 

  • Used to indicate, demonstrate or compare the quantity of something. 

pron

  • A large amount or great extent. 

adv

  • Often; frequently. 

  • Used to indicate or compare extent. 

  • To a great extent. 

How often have the words a good few and much occurred in a corpus of books? (source: Google Ngram Viewer )