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

Darkness covered his heart.

He was searching for something in the dark.

He bought illegal goods on the black market.

Amemiya-san is my best friend.

He was searching for something in the darkness.

He overcame the darkness of his own heart.

When the evening twilight comes, the town becomes quiet.

The Niten is the most beautiful flower in my garden.

Keitei is my hometown.