Before that, paperfolding for play was known by a variety of names, including "orikata", "orisue", "orimono", "tatamigami" and others. Exactly why "origami" became the common name is not known; it has been suggested that the word was adopted in the kindergartens because the written characters were easier for young children to write. Another theory is that the word "origami" was a direct translation of the German word "Papierfalten", brought into Japan with the Kindergarten Movement around 1880.