alarm vs worry

alarm

verb
  • To surprise with apprehension of danger; to fill with anxiety in regard to threatening evil; to excite with sudden fear. 

  • To give (someone) notice of approaching danger 

  • To rouse to vigilance and action; to put on the alert. 

  • To call to arms for defense 

  • To keep in excitement; to disturb. 

noun
  • An instance of an alarm ringing, beeping or clanging, to give a noise signal at a certain time. 

  • A mechanical device for awaking people, or rousing their attention. 

  • A sudden attack; disturbance. 

  • Any sound or information intended to give notice of approaching danger; a warning sound to arouse attention; a warning of danger. 

  • A summons to arms, as on the approach of an enemy. 

  • Sudden surprise with fear or terror excited by apprehension of danger; in the military use, commonly, sudden apprehension of being attacked by surprise. 

worry

verb
  • To be troubled; to give way to mental anxiety or doubt. 

  • To harass; to irritate or distress. 

  • To touch repeatedly, to fiddle with. 

  • To seize or shake by the throat, especially of a dog or wolf. 

  • Disturb the peace of mind of; afflict with mental agitation or distress. 

noun
  • A strong feeling of anxiety. 

  • An instance or cause of such a feeling. 

  • A person who causes worry. 

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