This is a joint project that my partner and I must work on to complete on time for chemistry class.

This joint bank account is held by both me and my father, since I am too young to have a bank account opened in my name alone.

Our home is under joint ownership, being the property of both myself and my wife, since we believe sharing responsibility is an important part of our marriage.

Because my friend and I both borrowed money from the same person, we owe him a joint debt, each owing him fifty dollars apiece.

Every major decision in a democracy is a joint one, as the decision is always made by multiple people and never by one.