address (one) as (something)
1. To use someone's specific title in speech or writing. It is proper to address her as "Madam Secretary."
2. To treat someone in a certain way. Yes, I'm your friend, but I'm also your boss, so please address me as your superior during work hours.
address someone as
a specific title or attribute 1. to talk to or write to a person, using a particular title. They addressed Abraham Lincoln as "Mr. President."
2. to treat a person you are talking with in a particular manner. You should address him as your equal.