disunite vs team up

disunite

verb
  • To cause disagreement or alienation among or within. 

  • To separate, sever, or split. 

  • To disintegrate; to come apart. 

team up

verb
  • To join into a team, or into teams. 

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