persevering vs up for

persevering

adj

  • Tending to persevere. 

noun

  • perseverance 

up for

prep

  • Willing to participate in; interested in. 

  • Being or due to be evaluated, inspected, judged, considered, sold, etc., in the stated circumstances or by the stated method. 

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