Individual #Oahu_Island__Oahu  an island of central Hawaii (between Molokai and Kauai); the chief island of the state
  instance of:  #island
  part of:  #Hawaiian_Islands
  part:  #Honolulu__capital_of_Hawaii__Hawaiian_capital  the capital and largest city of Hawaii; on the island of Oahu
  part:  #Waikiki  a well-known beach and resort area on Oahu Island southeast of Honolulu
  part:  #Pearl_Harbor  a harbor on Oahu west of Honolulu; location of a United States naval base that was attacked by the Japanese on 7 Dec 1941

No statement uses or specializes #Oahu_Island; click here to add one.