#acknowledgment__acknowledgement  a statement acknowledging something or someone
  supertype:  #subject_matter__subjectmatter__message__content__substance  what a communication that is about something is about
  subtype:  #receipt  an acknowledgment (usually tangible) that payment has been made
     subtype:  #ticket_stub__stub  a torn part of a ticket returned to the holder as a receipt
        subtype:  #rain_check.ticket_stub__raincheck  a ticket stub entitling the holder to admission to a future event if the scheduled event was cancelled due to rain
     subtype:  #bill_of_lading__waybill  a receipt from the carrier for the goods being shipped
     subtype:  #pawn_ticket  a pawnbroker's receipt for articles taken as security
  subtype:  #word_of_farewell__farewell  an acknowledgment or expression of goodwill at parting
     subtype:  #adieu__adios__adio__arrivederci__auf_wiedersehen__aufwiedersehen__au_revoir__bye__bye-bye__byebye__cheerio__good-by__goodby__good-bye__goodbye__good_day__sayonara__so_long  a farewell remark; "they said their good-byes"
     subtype:  #bon_voyage__bonvoyage__send-off  an organized expression of goodwill at the start of a trip or new venture
     subtype:  #good_morning__morning  a conventional expression of greeting or farewell
     subtype:  #good_afternoon__afternoon  a conventional expression of greeting or farewell
     subtype:  #good_night  a conventional expression of farewell
  subtype:  #greeting__salutation  (usually plural) an acknowledgment or expression of good will (especially on meeting)
     subtype:  #well-wishing  an expression of good will from one person to another; "much hand-shaking and well-wishing"
     subtype:  #compliments__regard__wish  (usually plural) a polite expression of desire for someone's welfare; "give him my kind regards"; "my best wishes"
     subtype:  #reception.greeting  the manner in which something is greeted; "she did not expect the cold reception she received from her superiors"
     subtype:  #hail.greeting  enthusiastic greeting
     subtype:  #pax__kiss_of_peace  (Roman Catholic) a greeting signifying Christian love for those assisting at the Eucharist
     subtype:  #welcome  a greeting or reception; "the proposal got a warm welcome"
        subtype:  #cordial_reception__cordialreception__hospitality  kindness in welcoming guests or strangers
        subtype:  #inhospitality  unkind and inconsiderate welcome; "he was taken aback by such inhospitality"
        subtype:  #glad_hand  a warm welcome; may be insincere
     subtype:  #salute  an act of greeting with friendly words and gestures like bowing or lifting the hat
     subtype:  #hello__hullo__hi__howdy__howdoyoudo  an expression of greeting; "every morning they exchanged polite hellos"
     subtype:  #good_morning__morning  a conventional expression of greeting or farewell
     subtype:  #good_afternoon__afternoon  a conventional expression of greeting or farewell
     subtype:  #military_greeting__salute  a formal military gesture of respect
     subtype:  #calling_card__callingcard__visiting_card__card  a written greeting that is left to indicate that you have visited
  subtype:  #aloha__ciao  an acknowledgment that can be used to say hello or goodbye (aloha is Hawaiian; ciao is Italian)
  subtype:  #handshake__shake__handshaking__handclasp  grasping and shaking a person's hand (as to acknowledge an introduction or to agree on a contract)
  subtype:  #apology  an expression of regret at having caused trouble for someone; "he wrote a letter of apology to the hostess"
  subtype:  #mea_culpa__meaculpa  an acknowledgment of your error or guilt
  subtype:  #condolence__commiseration  an expression of sympathy with another's grief; "they sent their condolences"
  subtype:  #congratulation__felicitation  acknowledgement that someone has an occasion for celebration
  subtype:  #regrets__regret__refusal__declination  the polite declining of an invitation
  subtype:  #admission.acknowledgment  an acknowledgment of the truth of something
     subtype:  #confession.admission  an admission of misdeeds or faults
        subtype:  #self-accusation__self-condemnation  an admission that you have failed to do or be something you know you should do or be
  subtype:  #thanks.acknowledgment  an acknowledgment of appreciation
     subtype:  #appreciation.thanks  an expression of gratitude; "he expressed his appreciation in a short note"
     subtype:  #thank_you  a conversational expression of gratitude
     subtype:  #curtain_call__curtaincall__bow  an appearance by actors or performers at the end of the concert or play in order to acknowledge the applause of the audience

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