mair vs top-level

mair

adj
  • more 

noun
  • Various former royal officials in the Kingdom of Scotland. 

adv
  • more 

top-level

adj
  • Best. 

  • Highest. 

  • Applied to domains at the highest level, such as .uk covering all sites for the United Kingdom. 

noun
  • read-eval-print loop 

How often have the words mair and top-level occurred in a corpus of books? (source: Google Ngram Viewer )