Complex sentence: Nigerian Pidgin or Naija is an English-based pidgin and a creole language spoken as a kind of "lingua franca" across Nigeria that is referred to simply as "Pidgin", "Broken English" or "Brokin".
Split into simpler sentences: Nigerian Pidgin or Naija is an English-based pidgin and a creole language spoken as a "lingua franca" across Nigeria. The language is commonly referred to as "Pidgin" or "Brokin".