His father was very stubborn, so the proverb 'Like father, like son' fits perfectly.

A proper noun is a noun that refers to a specific person, place, or thing.

He injured his little finger.

A boy is playing in the park.

He is known as an international businessman.

I cultivate wheat on my farm.

She contacted her parents by international phone call.

In my room, a beautiful moth orchid is decorated.

That cute little girl is my granddaughter.

He is my basketball coach.