last straw vs maximal

last straw

noun
  • A small addition to a burden which causes it to exceed the capacity. 

maximal

adj
  • Largest, greatest (in magnitude), highest, most. 

noun
  • Said of a set of well-formed formulas: that it is as large as it can be without being inconsistent; i.e. that for any well-formed formula φ, the set contains either φ or ~φ. 

  • The element of a set with the greatest magnitude. 

  • Said of an ideal of a ring or a filter of a lattice: that it is as large as it can be without being trivial (improper). 

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