To be sure, once again, we take this opportunity to distinguish between a Petition for Review on Certiorari (an appeal by certiorari) and a Petition for Certiorari (a special civil action/an original action for Certiorari), under Rules 45 and 65, respectively, of the Revised Rules of Court. Madrigal Transport Inc. v. Lapanday Holdings Corporation, summarizes the distinctions between these two remedies, to wit:

As to the Purpose. Certiorari is a remedy designed for the correction of errors of jurisdiction, not errors of judgment. In Pure Foods Corporation v. NLRC, we explained the simple reason for the rule in this light. 

When a court exercises its jurisdiction, an error committed while so engaged does not deprive it of the jurisdiction being exercised when the error is committed. If it did, every error committed by a court would deprive it of its jurisdiction and every erroneous judgment would be a void judgment. This cannot be allowed. The administration of justice would not survive such a rule. Consequently, an error of judgment that the court may commit in the exercise of its jurisdiction is not correct[a]ble through the original civil action of certiorari.

The supervisory jurisdiction of a court over the issuance of a writ of certiorari cannot be exercised for the purpose of reviewing the intrinsic correctness of a judgment of the lower court -- on the basis either of the law or the facts of the case, or of the wisdom or legal soundness of the decision. Even if the findings of the court are incorrect, as long as it has jurisdiction over the case, such correction is normally beyond the province of certiorari. Where the error is not one of jurisdiction, but of an error of law or fact -- a mistake of judgment -- appeal is the remedy.

As to the Manner of Filing. Over an appeal, the CA exercises its appellate jurisdiction and power of review. Over a certiorari, the higher court uses its original jurisdiction in accordance with its power of control and supervision over the proceedings of lower courts. An appeal is thus a continuation of the original suit, while a petition for certiorari is an original and independent action that was not part of the trial that had resulted in the rendition of the judgment or order complained of. The parties to an appeal are the original parties to the action. In contrast, the parties to a petition for certiorari are the aggrieved party (who thereby becomes the petitioner) against the lower court or quasi-judicial agency, and the prevailing parties (the public and the private respondents, respectively).

As to the Subject Matter. Only judgments or final orders and those that the Rules of Court so declared are appealable. Since the issue is jurisdiction, an original action for certiorari may be directed against an interlocutory order of the lower court prior to an appeal from the judgment; or where there is no appeal or any plain, speedy or adequate remedy.

As to the Period of Filing. Ordinary appeals should be filed within fifteen days from the notice of judgment or final order appealed from. Where a record on appeal is required, the appellant must file a notice of appeal and a record on appeal within thirty days from the said notice of judgment or final order. A petition for review should be filed and served within fifteen days from the notice of denial of the decision, or of the petitioners timely filed motion for new trial or motion for reconsideration. In an appeal by certiorari, the petition should be filed also within fifteen days from the notice of judgment or final order, or of the denial of the petitioners motion for new trial or motion for reconsideration.

On the other hand, a petition for certiorari should be filed not later than sixty days from the notice of judgment, order, or resolution. If a motion for new trial or motion for reconsideration was timely filed, the period shall be counted from the denial of the motion.

As to the Need for a Motion for Reconsideration. A motion for reconsideration is generally required prior to the filing of a petition for certiorari, in order to afford the tribunal an opportunity to correct the alleged errors. Note also that this motion is a plain and adequate remedy expressly available under the law. Such motion is not required before appealing a judgment or final order. (Tagle vs. Equitable PCI Bank, G.R. No. 172299, April 22, 2008)