WordWeb gives the following for 'argument'.

A fact or assertion offered as evidence that something is true.

A discussion in which reasons are advanced for and against some proposition or proposal.

A contentious speech act; a dispute where there is strong disagreement

A summary of the subject or plot of a literary work or play or movie.

A variable in a logical or mathematical expression whose value determines the dependent variable; if f(x)=y, x is the independent variable.

No it isn't..........