As used in this chapter, unless the provision or context otherwise requires:
(a)"Action" includes an action commenced by cross-complaint or other pleading that asserts a cause of action or claim for relief.
(b)"Complaint" includes a cross-complaint or other initial pleading.
(c)"Court" means the court in which the action is pending.
(d)"Defendant" includes a cross-defendant or other person against whom an action is commenced.
(e)"Plaintiff" includes a cross-complainant or other person by whom an action is commenced.
(f)"Service" includes return of summons.