As nouns the difference between subject and advice
is that
subject is (
label) in a clause: the word or word group (usually a noun phrase) that is dealt with in active clauses with verbs denoting an action, the
subject and the actor are usually the same while
advice is an opinion recommended or offered, as worthy to be followed; counsel.
As an adjective subject
is likely to be affected by or to experience something.
As a verb subject
is to cause (someone or something) to undergo a particular experience, especially one that is unpleasant or unwanted.