bandana vs headwear

bandana

noun
  • A large kerchief, usually colourful and used either as headgear or as a handkerchief, neckerchief, bikini, or sweatband. 

  • A style of calico printing, in which white or bright spots are produced upon cloth previously dyed a uniform red or dark colour, by discharging portions of the color by chemical means, while the rest of the cloth is under pressure. 

headwear

noun
  • a hat or other covering for the head 

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