He died of disease after a long illness.

He died of disease after a long illness.

I'm feeling down because of May sickness.

He takes medicine every day because he suffers from depression.

He is sickly and often misses school.

He often misses school because of his sickliness.

In old Japan, leprosy was a disease that was difficult to treat and was ostracized from society.

He suffered from lung disease for a long time.

He is a cat lover and plays with his cat every day.

My beloved cat is very cute.