My father is engaged in poultry farming.

Morphology is a part of linguistics that studies the form and structure of words.

I think waste is an act of economic suicide.

I saw an old man playing with his grandson in the park.

He has contributed to the company for many years as an elderly worker.

Let's respect the elderly and learn from their knowledge.

The old man takes a walk in the park every day.

An old person was playing with his grandson in the park.

Recently, my mother's presbyopia has been progressing, making it difficult for her to read.

My old dog is still energetic.