war of words

empty words

Any type of talk with little meaning; a message that seems to contain meaningful content but is actually vapid.

have words

To argue, to have an argument.

man of few words

A man who doesn't speak much; a habitually terse or taciturn man.

mark my words

Listen to me; used before or after a statement one wishes to emphasize, especially a prediction.

mince words

To restrain oneself when speaking by withholding some comments or using euphemisms in order to be polite, tactful, etc.

mouth the words

To speak insincerely.

or words to that effect

used to indicate a paraphrase or the chance of an error in the details of reported speech.

pissing war

An immature dispute over some trivial matter.