葉 leaf

Every year, the tree grows a new society of flowers and leaves.

any word ★★★★★ FP
言 (say) + 葉 (leaf) = 言葉 (any word)

ANY word - unlike the related term 単語（たんご）、　言葉 can refer to compound words, or onomonopoeia. Also 言葉 can mean "way of speaking." There are expressions like "watch what you say!" that use 言葉 this way: 言葉使い が丁寧 (her way of speaking is very polite!) or 言葉大切につかいましょう （let's be careful how we speak!)

one's choice of words ★★☆☆☆ KANA
言 (say) + 葉 (leaf) + 遣 (apply) = 言葉遣い (one's choice of words)

postcard ★☆☆☆☆ KUNKUN
葉 (leaf) + 書 (write) = 葉書 (postcard)