relation
When referring to family members, "relation" is often used interchangeably with "relative," though "relative" is more common in everyday conversation. In the context of international politics or business, the word is almost always used in the plural form ("relations") to describe how different groups interact. The meaning involving the telling of a story is quite formal and rare in modern spoken English; you will mostly find it in older literature.
💬Casual Conversation
Can you circle back on the relation between these two datasets? Need it ASAP.
I'm swamped. I'll get to it once I've had another coffee.
Meanings
The way in which two or more concepts, objects, or people are connected, or the state of being connected.
"There is a close relation between diet and good health."
A person who is connected by blood or marriage; a relative.
"She is a distant relation of the royal family."