akuzito

A participial nominal, and one of the cleanest examples in the language. Take akuzi, to accuse. Make the participle passive and past with -it-, so akuzita means having been accused. Swap the adjective ending for -o and you have a person in that state: akuzito, the accused.

The courtroom pair is the point. Akuzanto is the one doing the accusing, the prosecutor or complainant; akuzito is the one it lands on, the defendant. English needs two unrelated words and a law degree to keep prosecutor and defendant straight. Esperanto changes one letter, and the letter tells you which side of the room the person is standing on. Run the same slot through the other participles and you get akuzoto, someone about to be charged, and akuzonto, someone who is going to bring the charge.

Note the tense in -it-, because it does real work here. The accusing has already happened, which is precisely the state a defendant is in from the moment charges are laid. Using akuzato, with the present passive -at-, would describe someone being accused right now, mid-sentence, which is not how a legal system talks about people.