eli5: Is the sun called “sun” or is a sun simply the central star of a solar system?

Question

I’m writing a work where characters are on a fictional planet not in our solar system. I wanted to refer to the planet’s star/source of light as “the sun” still, but is that correct? Is the sun as we know it the only “sun”, or is sun simply a word to describe our source of light?

In: Planetary Science

Answer 1

Will you be calling a day a “day?”

A mountain a “mountain?”

You can go any direction you want when writing.

Definitely a question for a writing sub.