Paralanguage - vocal cues
Pitch - highness or lowness of voice
Rate - how rapidly or slowly you speak
Inflection - variety or changes in pitch
Volume - loudness or softness of voice
Quality - resonance of voice, huskiness, nasality, raspiness
Sounds and silence - mmh, huh, ahh and no sound at all
Pronunciation - use of a word according to local pronunciation
Articulation - mouth, tongue and teeth coordinate to make words understandable
Enunciation - combining pronunciation and articulation to produce clarity and distinction