Partnership
A marriage. A joint ownership of a bar. When two dudes put up half the dough each to share 50 50 in a time machine. A partnership is just the merging of two individuals in doing a given business deal or setting up a business structure. If both are owners, then both are liable for uh.. Bad things.
Partnerships carry a lot of financial danger too, if one partner goes off the rails and decides to commit fraud in the name of the company, or that evil partner enters into a stupid company-bankrupting contract, then both parties pay.
The innocent partner pays just as much in the form of whatever financial damages befall the partnership as the evil one. And partnership liabilities include personal assets if the partnership is structured like a general partnership with limited partners having no personal liability…
So for all the good that a partnership can have, it can get...Bad.
And ugly.
So enter partnerships carefully. Spend lots of dough on lawyers before you set it up so you don't have to after.