eat up vs swallow up

eat up

verb
  • To consume completely. 

  • To accept or believe entirely, immediately, and without questioning. 

  • to find something to be very cute (typically only used for children or pets) 

  • His behavior has eaten up all the goodwill we felt towards him. 

  • To cover (a distance or an amount). 

swallow up

verb
  • To voraciously consume resources, such as money; to devour. 

  • To completely enclose or envelop. 

  • To take over or absorb something (especially an organisation) so it no longer has a separate identity; to assimilate. 

How often have the words eat up and swallow up occurred in a corpus of books? (source: Google Ngram Viewer )