noun (n)

• the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others(noun.cognition)

  Synonym:
  attending
  Antonym:
  inattention
  

  source: wordnet30
• the work of providing treatment for or attending to someone or something(noun.act)

  Example:
  The old car needs constant attention.
  

  Synonym:
  aid, care, tending
  

  source: wordnet30
• a general interest that leads people to want to know more(noun.cognition)

  Example:
  She was the center of attention.
  

  source: wordnet30
• a courteous act indicating affection(noun.act)

  Example:
  She tried to win his heart with her many attentions.
  

  source: wordnet30
• the faculty or power of mental concentration(noun.cognition)

  Example:
  Keeping track of all the details requires your complete attention.
  

  source: wordnet30
• a motionless erect stance with arms at the sides and feet together; assumed by military personnel during drill or review(noun.attribute)

  Example:
  The troops stood at attention.
  

  source: wordnet30
• The act or state of attending or heeding; the application of the mind to any object of sense, representation, or thought; notice; exclusive or special consideration; earnest consideration, thought, or regard; obedient or affectionate heed; the supposed power or faculty of attending.(noun)

  source: webster1913