2 "eight-year" rules in the Civil Code

Both of the provisions below are under the law on prescription.
Article 1132. The ownership of movables prescribes through uninterrupted possession for four years in good faith.
The ownership of personal property also prescribes through uninterrupted possession for eight years, without need of any other condition.
With regard to the right of the owner to recover personal property lost or of which he has been illegally deprived, as well as with respect to movables acquired in a public sale, fair, or market, or from a merchant's store the provisions of articles 559 and 1505 of this Code shall be observed.
Article 1140. Actions to recover movables shall prescribe eight years from the time the possession thereof is lost, unless the possessor has acquired the ownership by prescription for a less period, according to articles 1132, and without prejudice to the provisions of articles 559, 1505, and 1133.
Article 1132. The ownership of movables prescribes through uninterrupted possession for four years in good faith.
The ownership of personal property also prescribes through uninterrupted possession for eight years, without need of any other condition.
With regard to the right of the owner to recover personal property lost or of which he has been illegally deprived, as well as with respect to movables acquired in a public sale, fair, or market, or from a merchant's store the provisions of articles 559 and 1505 of this Code shall be observed.
Article 1140. Actions to recover movables shall prescribe eight years from the time the possession thereof is lost, unless the possessor has acquired the ownership by prescription for a less period, according to articles 1132, and without prejudice to the provisions of articles 559, 1505, and 1133.