Link is a reference to a file or webpage, while join is a method to combine data from two or more tables in a database.

• Link is a reference to a URL or file that can be clicked to access the content.

• Join is a SQL operation used to combine rows from two or more tables based on a related column between them.

• Example: Click here is a link, while SELECT * FROM table1 JOIN table2 ON table1.id = table2.id is a join operation.