congregate vs disband

congregate

adj
  • Collective; assembled; compact. 

verb
  • To come together; to assemble; to meet. 

  • To collect into an assembly or assemblage; to bring into one place, or into a united body. 

disband

verb
  • To break up or (cause to) cease to exist; to disperse. 

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