[辞 / 辭, cíㄘˊ] refined language; wording; poetic genre (so far, interchangeable with 詞|词); to take leave; to resign; to dismiss; to decline, See Also: 詞, 词#5667
[致辞 / 致辭, zhì cíㄓˋ ㄘˊ] to express in words or writing; to make a speech (esp. short introduction, vote of thanks, afterword, funeral homily etc); to address (an audience); same as 致詞|致词, See Also: 致詞, 致词#14387