This is the 11704th most frequent Russian word.
заведена
"Заведена" means "started" or "initiated," often referring to something being set up, started, or charged (like a case, mechanism, or engine).
In this sentence, 'заведена' is used to indicate that a habit has been established or initiated.
У меня заведена привычка вставать рано.
I have developed a habit of waking up early.
Here, 'заведена' signifies that a file or case has been officially started or registered.
В суде была заведена новая папка с документами.
A new file with documents was opened in the court.
This usage implies that a vehicle's engine has been started or activated.