co-ed vs several

co-ed

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

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

several

adj
  • A number of different; various. 

  • Separable, capable of being treated separately. 

adv
  • By itself; severally. 

det
  • Consisting of a number more than two but not very many. 

noun
  • Each particular taken singly; an item; a detail; an individual. 

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