Public speaking Oral communication 134 Business presentations 68 Business communication 31 Interpersonal communication 27 Communication of technical information 20 Persuasion (Rhetoric) 18 Speech 17 Visual communication 15 Visual aids 14 Communication 13 English language 13 Business writing 12 Communication in science 10 Oratory 10 Listening 9 Debates and debating 8 Technique 8 Voice culture 8 Speechwriting 7 Study and teaching 7 Textbooks for foreign speakers 7 Communication in management 6 Multiculturalism 6 Science 6 Vocational guidance 6 Audiences 5 Leadership 5 Psychological aspects 5 Speeches, addresses, etc 5