allo- vs con-

allo-

prefix
  • variant. 

  • isomeric; especially, of amino acids having two chiral centres, the second diastereoisomer to be discovered or synthesized 

  • a diastereomer having the same configuration on four neighboring chiral carbon atoms as carbohydrate allose 

  • nonself; nonself but of the same species. 

  • different; other. 

con-

prefix
  • constructed, artificial 

  • related to conlangs, conworlds, etc. 

  • used with certain words to intensify their meaning 

  • used with certain words to add a notion similar to those conveyed by with, together, or joint 

  • hypothetical, fictional 

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