surfacing vs towering

surfacing

noun
  • The act of coming above the surface. 

  • Material used to make a surface. 

towering

noun
  • The act or condition of being high above others. 

adj
  • Very tall or high, so as to dwarf anything around it. 

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