till vs up to

till

prep
  • Until; to, up to; as late as (a given time). 

  • To make it possible that. 

verb
  • To develop so as to improve or prepare for usage; to cultivate (said of knowledge, virtue, mind etc.). 

  • To cultivate soil. 

  • To work or cultivate or plough (soil); to prepare for growing vegetation and crops. 

conj
  • Until, until the time that. 

noun
  • A vetch; a tare. 

  • A cash register. 

  • glacial drift consisting of a mixture of clay, sand, pebbles and boulders 

  • manure or other material used to fertilize land 

  • A removable box within a cash register containing the money. 

  • The contents of a cash register, for example at the beginning or end of the day or of a cashier's shift. 

up to

prep
  • Until. 

  • Incumbent upon; the obligation of; the duty of. 

  • Considering all members of an equivalence class the same. 

  • Within the authority or jurisdiction of. 

  • Doing; involved in. 

  • For the option or decision of. 

  • As much as; no more than. 

  • Next to; near; towards; as far as. 

  • Ready for. 

  • Capable of. 

  • Willing to participate in. 

adj
  • maximum of. 

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