Spooner's daughter

A girl walked up to the information desk in her local hospital and said, "I, need, to see the upturn, please."
"I think, you mean the 'intern,' don't you?" asked the nurse on duty.
"Yes," said the girl. "I want to have a 'contamination."
"Don't you mean 'examination,'" the nurse questioned her again.
"Yeah, okay but I want to go to the 'fraternity ward,' anyway."
"I'm sure you mean the maternity ward."
To which the girl replied "Upturn, intern, contamination, examination fraternity, maternity.... What's the difference? All I know is I, haven't demonstrated in two months, and I think I'm stagnant."