advanced vs least

advanced

adj
  • with greater complexity, more difficult 

  • At or close to the state of the art. 

  • Pronounced farther to the front of the vocal tract. 

  • Indicating a time ahead of the correct time. 

  • Having moved forward in time or space (e.g. advanced ignition timing). 

  • In a late stage of development; greatly developed beyond an initial stage. 

least

adv
  • Used for forming superlatives of adjectives, especially those that do not form the superlative by adding -est. 

  • In the smallest or lowest degree; in a degree below all others. 

noun
  • Something of the smallest possible extent; an indivisible unit. 

det
  • The most little; the smallest amount or quantity of something. 

prep
  • At least. 

  • What a stupid white privileged POS I am! Least I call myself out. 

  • 2019 December, Justin Blackburn, The Bisexual Christian Suburban Failure Enlightening Bipolar Blues, page 79 

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