overboard vs undue

overboard

adv
  • Over the edge; especially, off or outside of a boat. 

  • Excessively; too much. 

verb
  • To throw over the edge of a boat into the water. 

adj
  • Outside of a boat; in the water. 

undue

adj
  • That which ought not to be done; illegal; unjustified. 

  • Not owing or payable. 

  • Excessive; going beyond that what is natural or sufficient. 

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