fuse vs unwind

fuse

noun
  • The mechanism that ignites the charge in an explosive device; a detonator. 

  • A cord that, when lit, conveys the fire to some explosive device. 

  • A friction match for smokers' use, having a bulbous head which when ignited is not easily blown out even in a gale of wind. 

  • A device to prevent excessive overcurrent from overload or short circuit in an electrical circuit, containing a component that melts and interrupts the current when too high a load is passed through it. 

  • A tendency to lose one's temper. 

  • A kind of match made of paper impregnated with niter and having the usual igniting tip. 

verb
  • To have been protected against overcurrent by its fuse melting away, creating a gap in the wire, thus stopping the circuit from operating. 

  • To liquify by heat; melt. 

  • To furnish with or install a fuse to protect a circuit against overcurrent. 

  • To form a bicyclic compound from two similar or different types of ring such that two or more atoms are shared between the resulting rings 

  • To furnish with or install a fuse to (an explosive device) (see Usage notes for noun above). 

  • To melt together; to blend; to mix indistinguishably. 

  • To melt together. 

unwind

noun
  • Any mechanism or operation that unwinds something. 

verb
  • To undo something. 

  • To relax; to chill out; to rest and become relieved of stress 

  • To close out a position, especially a complicated position. 

  • To be or become unwound; to be capable of being unwound or untwisted. 

  • To analyse (a call stack) so as to generate a stack trace etc. 

  • To separate (something that is wound up) 

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