A hinge joint, like the human elbow or knee, is a type of joint that only bends in one direction.

He values his sense of honor.

It took him time to unravel the coiled about.

He dug a hole in the ground and stored vegetables.

I wonder what to have for lunch today.

Let's have lunch together.

We had a delicious lunch.

Beautiful flowers are blooming in my new flowerpot.

My grandfather is seventy years old.

I will explain this matter in detail in the future.