guano vs maul

guano

noun
  • Dung from a sea bird or from a bat. 

  • Coccothrinax borhidiana, a variety of palm tree indigenous to Cuba. 

maul

noun
  • A heavy long-handled hammer, used for splitting logs by driving a wedge into them, or in combat. 

  • A situation where the player carrying the ball, who must be on his feet, is held by one or more opponents, and one or more of the ball carrier's team mates bind onto the ball carrier. 

verb
  • To beat with a maul. 

  • To criticise harshly. 

  • To handle someone or something in a rough way. 

  • To savage; to cause serious physical wounds (usually used of an animal). 

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