What are some words end with the suffix Cain?

You're likely thinking of the suffix "-caine," which is used to form words related to local anesthetics. Here are some common examples:

* Cocaine

* Novocaine

* Lidocaine

* Tetracaine

* Benzocaine

It's important to note that "Cain" by itself is not a common suffix. It's typically associated with the biblical figure Cain, and words ending in "Cain" are usually proper nouns like "Cain" or "Cainite."