Hanami
Hanami was used as a term that meant "cherry blossom viewing" for the first time in the Heian era novel Tale of Genji (chapter 8, 花宴 Hana no En, "Under the Cherry Blossoms"). From then on, in tanka and in haiku poetry, "flowers" meant "sakura", and the terms "hanami" and "flower party" were only used to mean sakura blossom viewing.