As a verb:
* The scientist linked the rise in sea levels to climate change.
* Could you please link me to the article you mentioned?
* The two companies linked up to create a new product.
As a noun:
* Click on the link to visit our website.
* The study found a strong link between exercise and happiness.
* The chain is only as strong as its weakest link.
In a figurative sense:
* There is a link between our past and our present.
* Her voice was a link to the memories of her childhood.
Let me know if you would like me to provide more examples, or if you have a specific context in mind!