Questions about example sentences with, and the definition and usage of "Overburdened"

A: I think that overburdened is regarding a person or animal. “Lee has been overburdened with the demands of his father” congested is used more when describing the state of something like “the traffic in the city was very congested this morning”. Congested also describes the pressure in someone’s nose and sinuses when they have a cold. 😆