take by storm vs zerg

take by storm

verb
  • To capture by means of a sudden, overwhelming attack. 

  • To seize, overpower, or captivate in a sudden and forceful manner. 

  • To rapidly gain great popularity in (a place). 

zerg

verb
  • To attack an opponent with a large swarm of units before they have been able to build sufficient defences. 

noun
  • A very large group of units or players. 

How often have the words take by storm and zerg occurred in a corpus of books? (source: Google Ngram Viewer )