Mam
Part of speech: noun
Definition: Diminutive of mother.
Sir
Part of speech: verb
Definition: to address somebody using sir
Part of speech: noun
Definition: A man of a higher rank or position.An address to a military superior.An address to any male, especially if his name or proper address is unknown.
Example sentence: He is really something. I love him. He is Sir Arsene Wenger.