evidential vs evincive

evidential

adj
  • Of or providing evidence. 

noun
  • A syntactic element (affix, clitic, or particle) that indicates evidentiality. 

evincive

adj
  • Tending to prove; having the power to demonstrate; demonstrative; indicative. 

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