This is the 1756th most frequent Russian word.
жду
"Жду" means "I am waiting."
In this sentence, 'жду' describes a person's current action of waiting for a specific object.
Я жду автобус.
I am waiting for the bus.
'Ждет' here is used to describe anticipating an event to occur.
Она ждет, когда закончится дождь.
She is waiting for the rain to end.
'Ждем' is used here to express the hope or anticipation for a positive outcome.