Other forms: speakings; speakingly
Speaking is what we do when we talk to each other, either out loud or through sign language. Many classrooms have a rule that speaking is not allowed during quizzes and exams.
In addition to the speaking we do to communicate feelings and ideas, there's also public speaking, when someone gives a speech in front of an audience. And if you're not on speaking terms with someone, it means that you're so angry with each other that you don't talk anymore.