orthoepic vs syntactic

orthoepic

adj
  • Synonym of phonological: concerning the study of pronunciation. 

  • Correctly or accurately pronounced. 

syntactic

adj
  • Of, related to or connected with syntax. 

  • Containing morphemes that are combined in the same order as they would be if they were separate words e.g. greenfinch 

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