Due to the impact of the new coronavirus, we were forced to stay at home.

He chose to study at home for his university entrance exams.

He chose a life as a home security guard, meaning he chose to be a recluse.

He used a syringe to inject the medicine.

My father runs a small to medium enterprise.

Abstract nouns do not point to specific things.

Abstract algebra is a field of mathematics that studies algebraic structures in an abstract way.

He had to pay a fine for a parking violation.

There are many shops in the central part of this town.

Studying the history of the Middle Ages is very interesting.