a slave to vs underfoot

a slave to

underfoot

noun
  • A storage compartment that sits below the deck of a boat. 

adv
  • Under one's foot or feet. 

  • In the way; situated so as to obstruct or hinder. 

adj
  • Situated under one's foot or feet. 

  • In the way; placed so as to obstruct or hinder. 

  • Downtrodden; abject. 

verb
  • To provide a footing beneath; to shore up or underpin. 

  • To assign a column summary that is less than the sum of all the entries in that column. 

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