kosher vs trustable

kosher

adj
  • In accordance with standards or usual practice. 

  • Fit for use or consumption, in accordance with Jewish law (especially relating to food). 

verb
  • To kasher; to prepare (for example, meat) in conformity with the requirements of the Jewish law. 

adv
  • In a kosher manner; in accordance with kashrut. 

trustable

adj
  • Capable of being trusted; trustworthy. 

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