a good few vs ample

a good few

det
  • A number of, more than a bare few. 

ample

det
  • A fully sufficient or abundant quantity of; enough or more than enough. 

  • A quantity (of something) that is fully sufficient; plenty. 

adj
  • Not contracted or brief; not concise; extended; diffusive 

  • Large; great in size, extent, capacity, or bulk; for example spacious, roomy or widely extended. 

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