deadbolt vs stealth

deadbolt

verb
  • To fasten or secure with a deadbolt. 

noun
  • A kind of lock in which the bolt (moving portion) is held in position by the cylinder rather than by a spring and so cannot be retracted except by turning the cylinder. 

  • The part of the lock which is moved when the key is engaged. 

stealth

verb
  • To conceal or infiltrate through the use of stealth. 

  • To have sexual intercourse without a condom through deception (for example, removing the condom mid-act). 

noun
  • The attribute or characteristic of acting in secrecy, or in such a way that the actions are unnoticed or difficult to detect by others. 

adv
  • While hiding one's transgender status from society after transition. 

adj
  • Having properties that diminish radar signatures. 

  • Hiding one's transgender status (in general or in specific areas of one's life, e.g. at work) after transition. 

  • Surreptitious; secret; not openly acknowledged. 

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