The oilbird is a nocturnal bird that eats fruits and seeds.

Tamarillo is a fruit similar to tomatoes, originally from South America.

Category theory is a branch of mathematics that studies structures and their relationships.

He is an atheist, denying the existence of God.

I went to see a movie by myself.

Watching a movie alone is enjoyable.

Okeanos is a god in Greek mythology, considered the god of all seas.

He openly declares that he is an atheist.

He is majoring in phonology at university.

That person is my friend.