arse vs tail end

arse

noun
  • A person; the self; (reflexively) oneself or one's person, chiefly their body; (by extension) one's personal safety, or figuratively one's job, prospects, etc. 

  • A stupid, pompous, arrogant, mean or despicable person. 

  • Used in similes to express something bad or unpleasant. 

verb
  • To be silly, act stupid or mess around. 

tail end

noun
  • The hindmost part of anything (a person, animal, or object), the rear end; the butt, buttocks; hindquarters, rump. 

  • The last part of a period of time, event, or situation; the concluding or final part. 

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