aid vs alarm

aid

noun
  • Something which helps; a material source of help. 

  • Help; assistance; succor, relief. 

  • An historical subsidy granted to the crown by Parliament for an extraordinary purpose, such as a war effort. 

  • A helper; an assistant. 

  • An exchequer loan. 

  • A pecuniary tribute paid by a vassal to his feudal lord on special occasions. 

  • The rider's use of hands, legs, voice, etc. to control the horse. 

verb
  • To climb with the use of aids such as pitons. 

  • To provide support to; to further the progress of; to help; to assist. 

alarm

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

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

  • 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. 

verb
  • To give (someone) notice of approaching danger 

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

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

  • To call to arms for defense 

  • To keep in excitement; to disturb. 

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