loom large vs preponderate

loom large

verb
  • To have a great deal of importance, presence, power, or sway; to be of great significance or concern, especially when posing a likely threat or danger. 

preponderate

verb
  • To exceed in weight or influence; hence, to predominate. 

  • To overpower by stronger or moral power. 

  • To outweigh; to be heavier than; to exceed in weight. 

How often have the words loom large and preponderate occurred in a corpus of books? (source: Google Ngram Viewer )