kosher vs legal

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. 

legal

adj
  • Being allowed or prescribed by law. 

  • Relating to the law or to lawyers. 

  • Having its basis in the law. 

  • Above the age of consent or the legal drinking age. 

  • Following the rules or syntax of a system, such as a game or a programming language. 

  • (of paper or document layouts) Measuring 8½ in × 14 in (215.9 mm × 355.6 mm) (also legal-size). 

noun
  • Paper in sheets 8½ in × 14 in (215.9 mm × 355.6 mm). 

  • The legal department of a company. 

  • Somebody who immigrated lawfully. 

  • A spy who is attached to, and ostensibly employed by, an embassy, military outpost, etc. 

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