Divide the phrases and words into columns

Functional language is language that we use to perform various functions, such as making requests, giving advice, complaining, agreeing, asking permission, etc. It is important to differentiate between obligation and advice. You can advise something to your friends, peers etc. Some authorities, such as police, school directors or doctors can obligate you to do something.

should, ought to, if I were you, why don't you, my suggestion is, had better, how about Ving, must, have to, it is necessary to, it is compulsory that, the rule is that, you are obliged to

Advice	Obligation