General "related":
* lié (masculine) / liée (feminine) - This is the most common translation and can be used in many contexts.
* apparenté (masculine) / apparentée (feminine) - This is a slightly more formal option, often used when talking about family relationships.
Specific contexts:
* en rapport avec - This translates to "in relation to" and is used when talking about a connection between two things.
* ayant un rapport avec - This is a more formal version of "en rapport avec" and is used when emphasizing the connection.
* connexe - This means "connected" and is often used to describe things that are logically related.
* associé (masculine) / associée (feminine) - This means "associated" and is used when talking about a connection between two people or things.
Examples:
* Le livre est lié à l'histoire. (The book is related to the story.)
* Ils sont apparentés. (They are related.)
* Ce problème est en rapport avec le changement climatique. (This problem is related to climate change.)
* Ce sont des idées connexes. (These are connected ideas.)
The best translation for "related" will depend on the specific context.