belt-tightening vs wary

belt-tightening

adj
  • Causing or involving a reduction in expenditure. 

noun
  • A reduction in expenditure, often as a result of financial restrictions. 

wary

adj
  • thrifty, provident 

  • Characterized by caution; guarded; careful; on one's guard 

  • Cautious of danger; carefully watching and guarding against deception, trickery, and dangers; suspiciously prudent 

How often have the words belt-tightening and wary occurred in a corpus of books? (source: Google Ngram Viewer )