Conjoin (verb)

1. To join together; unite.
2. To bring or come together so as to form a whole.

Origin:

From the latin coniungere, meaning "to join together".

Examples:

1. The two companies decided to conjoin their efforts.
2. The two pieces of land were conjoined to make a larger farm.
3. They conjoined their talents to create a new product.
4. The law conjoins the two crimes under one statute.
5. The two rivers conjoin to form a larger river.