The difference between Madam and Sir

When used as verbs, madam means to address as "madam", whereas sir means to address (someone) using "sir".

Sir is also noun with the meaning: a man of a higher rank or position.

check bellow for the other definitions of Madam and Sir

Madam as a noun (dated, _, in the UK):

Examples:

"Mrs Grey wondered if the outfit she was trying on made her look fat. The sales assistant just said, “It suits you, madam”."

"Later, Mrs Grey was sitting in her favourite tea shop. “Would madam like the usual cream cakes and patisserie with her tea?” the waitress asked."
Madam as a noun:

The mistress of a household.
Madam as a noun (colloquial):

A conceited or quarrelsome girl.

Examples:

"Selina kept pushing and shoving during musical chairs. The nursery school teacher said she was a bad-tempered little madam."
Madam as a noun (slang):

A woman who runs a brothel, particularly one that specializes in finding prostitutes for rich and important clients.

Examples:

"After she grew too old to work as a prostitute, she became a madam."

Sir as a noun:

A man of a higher rank or position.
Sir as a noun:

to a knight or other low member of the peerage. to a superior military officer. to a teacher.

Examples:

"Just be careful. He gets whingy now if you don't address him as Sir John."

"'Sir, yes sir."

"Here's my report, sir."
Sir as a noun:

Examples:

"Excuse me, sir, do you know the way to the art museum?"
Sir as a noun (colloquial):

yes or no.

Examples:

"Sir, yes sir."

Sir as a verb:

To address (someone) using "sir".

Examples:

"Sir, yes, sir!<br>Don't you sir me, private! I work for a living!"