a lot vs big money

a lot

pron
  • A large amount. 

  • Many things, much. 

adv
  • Very much; a great deal; to a large extent. 

  • Often; frequently. 

big money

adj
  • Involving or transacting a large amount of money. 

noun
  • Large corporations, the people who run them, or corporate interest generally, seen as exerting political influence and prioritising profits over other political concerns. 

  • A large amount of money, especially a significant source of revenue or income. 

How often have the words a lot and big money occurred in a corpus of books? (source: Google Ngram Viewer )