Neutron stars are known for their density and strong gravity.

His thesis is filled with a lot of comments.

He commented on the article.

He underwent surgery for appendicitis.

He is the center of the team.

A neutron is part of an atomic nucleus.

Abstract nouns, unlike nouns that refer to concrete things, refer to concepts or states that do not have a specific shape or color.

Nakasu in Fukuoka has a beautiful night view.

The ability to extract important information from data is very important in business.

We need to extract the necessary information from this data.