allo- vs iso-

allo-

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

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

  • nonself; nonself but of the same species. 

  • different; other. 

  • variant. 

iso-

prefix
  • (of an aliphatic compound, especially a fatty acid) Having a branch on the penultimate carbon atom of a chain. 

  • Equal; equivalent. 

  • Forms terms for specific kinds of isolines. 

  • Isomer. 

  • Same, identical. 

  • Isomorphism. 

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