imprecise vs unequivocal

imprecise

adj
  • Not precise or exact; containing some error or uncertainty. 

unequivocal

adj
  • Unambiguous; without equivocation or ambiguity; singularly clear, unmistakable, or unquestionable 

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