He experienced the harsh reality of the underbelly of society.

His sociability is an important factor for his success as a leader.

He is deeply interested in social issues.

The Address Resolution Protocol is a means to identify the physical address of a device on the network.

My ear hurts because it's clogged with earwax.

I use an earpick to clean my ears every day.

He used the technique of ear copying to create a new song.

His music is like ear rape.

She was wearing new earrings.

He learned English by rote.