swallow up vs tear down

swallow up

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

  • To completely enclose or envelop. 

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

tear down

verb
  • To degrade (someone), to discredit or criticize 

  • To demolish 

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