These words are sometimes used interchangeably, unintentionally.
If you or your co-worker show “passion,” it means you/they are excited about something, and are willing to give their energies to do something.
A feeling of “ownership” is useful, as then there is something to “protect” and preserve. You/your co-worker will take action to guard an idea, an asset, or whatever it is you “own.” However, you/your co-worker will take a loss or give up ownership when faced by pain or a greater benefits.
“Accountability” is the most desired attribute. With accountability you and your co-worker will take initiative, take charge, and show creativity. You and your co-worker will create something out of nothing and make magical things happen. You/your co-worker will not give up your stand, and do what it takes to meet goals. You/your co-worker will stand up and be counted.
In leadership situations, when you assess support for your ideas, look for accountability. Don’t get fooled by mere passion or ownership.