What is the main difference between the limited and omniscient third person narrative point of view

"There are two types of third-person point of view: omniscient, in which the narrator knows all of the thoughts and feelings of all of the characters in the story, or limited, in which the narrator relates only their own thoughts, feelings, and knowledge about various situations and the other characters."

in griswold v. connecticut (1965), the supreme court ruled that a state's ban on the use of contraceptives violated the right to marital privacy.