В чем разница между refer и address ?Пожалуйста, приведите примеры.

Refer maybe used as allude or to direct towards to. Example:

Refer to the manual for further instruction.

(In this case you are being directed towards to the manual)

Or

She is referred to as the "Queen of Quiz Bees"

(In this case, the term Queen of Quiz Bees alludes to Her)

meanwhile Addresses as a verb means to direct a speech or a statement to a particular person or group of person. For example:

"She addressed the principal in her letter"

(Meaning she is talking to the principal in her letter)