slog vs yomp

slog

verb
  • To walk slowly, encountering resistance. 

  • To strike something with a heavy blow, especially a ball with a bat. 

  • To work slowly and deliberately at a tedious task. 

noun
  • A long, tedious walk, or session of work. 

  • An aggressive shot played with little skill. 

yomp

verb
  • To make a strenuous long-distance march. 

noun
  • A long-distance march carrying full kit. 

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