"60% of all human communication is nonverbal body language; 30% is your tone, so that means 90% of what you're saying ain't coming out of your mouth" - Alex "Hitch" Hitchens (from the movie Hitch.)
1st Level: words
2nd level: non-verbal signals and cues including - eye contact, body movement, gestures, posture (or presence), mirroring touch, facial expressions and physiological changes.
3rd level: Identity
Learn to manage stress for better communication. One of the fastest ways is to employ one or all of your senses - what you hear, smell, see, taste or touch.
https://www.neilsattin.com/wp-content/uploads/2017/01/Top3CommunicationSecrets-NeilSattin.com_.pdf
Neal Satin gives 3 secrets to transform your communication:
1) presence - stay in the present moment
2) a key question - "Will what I'm about to say make my partner feel more or less safe in our relationship?"
3) 7 words - "Did I get it" and "Is there more?" for active listening and confirming understanding.
Being emotionally aware enables you to accurately read other people's verbal and unspoken messages, identify consistencies or incongruities in words and non-verbal signals, and respond in ways that show others you understand and care.