• 言葉ことば — word / language
• 葉書はがき — postcard
• 紅葉こうよう — autumn leaves
• 落葉らくよう — fallen leaves
• 葉緑素ようりょくそ — chlorophyll

The kanji 葉 is made up of the 草冠 (艹) indicating "plant," and the component 世 (generation) over 木 (tree), symbolizing a tree with spreading leaves. It reflects not only the botanical leaf but also the idea of layers, words, or generations.