Question about an FC and House I now own.

[Catstab]

pretty much the same thing

It's not at all the same thing.

Did you read what I said? I wouldn't have said they were different if they were the same.

How to confer a plot: Abandon the plot back to the server (where it belongs to no one) and then another person purchases it from the game. This is considered griefing since you intended to relinquish the plot but instead extorted a player.
How to confer an FC: Give leadership of your FC to someone. This is considered pressing a button in the game.

So an FC you own and can transfer, a plot is merely tied to your character and cannot be transferred, only surrendered. Have I cleared it up for you?