This means to use your ears to notice sounds around you. When you hear something, the sound reaches your ear and you become aware of it.
I hear birds outside my window.
Can you hear the music now?
This use means you find out about something when someone tells you. You do not need to listen with your ears but you receive information.
I hear you got a new job.
She heard the news yesterday.
This means a person is given a chance to say what they think and others listen to their views.
Everyone will hear the mayor's opinion.
The committee heard many different ideas.
This is a figurative meaning, meaning to understand or feel the meaning behind words or sounds, including emotions.
I hear what you are saying about problems.
He heard the request and felt upset.
This refers to an official gathering to listen to opinions, reports, or facts, usually by a group or committee.
The board will hear public comments today.
They heard several reports during the meeting.