ja vs yessum

ja

adv
  • yes 

noun
  • Synonym of Korean foot: a traditional unit of length equivalent to about 30.3 cm. 

yessum

abbrev
  • yes ma’am (also used, somewhat less commonly, when speaking to a man) 

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