co-ed vs heterogeneous

co-ed

adj
  • Of any location, that mixes males and females. 

  • Of an educational institution, that teaches both males and females. 

heterogeneous

adj
  • Diverse in kind or nature; composed of diverse parts. 

  • Incommensurable because of different kinds. 

  • Visibly consisting of different components. 

  • Of a network comprising different types of computers, potentially with vastly differing memory sizes, processing power and even basic underlying architecture; alternatively, of a data resource with multiple types of formats. 

  • Having more than one phase (solid, liquid, gas) present in a system or process. 

How often have the words co-ed and heterogeneous occurred in a corpus of books? (source: Google Ngram Viewer )