For the relationship "If A exists, then B exists" to be observed, it is arrived at through induction. For it to become an argument, one must take this relationship and deduce that B exists given that A exists. Every logical argument requires induction to form its relationships. There may be counter-instances that would invalidate these relationships.
Relationship + Deduction = Argument.
Relationship + Valid Deduction = Valid Argument.
Relationship + Invalid Deduction = Invalid Argument.
Signed, '''''''' (6sin8karma)