A pronoun is a word used in place of a noun.

My older brother is currently working hard on his research as a graduate student.

He is studying at law school.

My younger brother plans to enter a private university next year.

He wants to become the president of the United States.

This restaurant has an all-you-can-eat sushi.

He is the pillar of his family.

I offer prayers to Dainichi Nyorai every day.

Would you like to observe the stars at the observatory tonight?

This ancient document contains the word 'だいくんゐ'.