'Speech' in the Bible

Lamech said to his wives, "Adah and Zillah, hear my voice. You wives of Lamech, listen to my speech, for I have slain a man for wounding me, a young man for bruising me.

The whole earth was of one language and of one speech.

Come, let's go down, and there confuse their language, that they may not understand one another's speech."