at first glance vs prima facie

at first glance

prep

  • After only a superficial examination or review 

prima facie

adv

  • At first sight; on the face of it. 

adj

  • Apparently correct; not needing proof unless evidence to the contrary is shown. 

How often have the words at first glance and prima facie occurred in a corpus of books? (source: Google Ngram Viewer )