Hearing is an involuntary physical act that happens through our primary sense organ when sound waves impinge upon the ear. Everyone with healthy ears can hear. Listening takes cultivation and evolves through one's lifetime. Listening is noticing and directing attention and interpreting what is heard. Deep Listening is exploring the relationship among any and all sounds.
Hearing is passive.
We can hear without listening. We can hear sounds inwardly from memory or imagination or outwardly from nature, or from civilization. Listening is actively directing one's attention to what is heard p noticing and directing the interaction and relationships of sounds and modes of attention. We hear in order to listen. We listen in order to interpret ourselves and out world and to experience meaning.