The Feudal system and Manor System are not the same, rather the Manor system is a part or element of the Feudal System. The Feudal system consisted of three estates: the Lord who owns everything due to military or other vassalage, the peasants or Manor system and the estate of Church.
The lord typically lived in the Manor house and had the best land. The peasants lived in small huts or homes and had access to whatever land was available and visited church for a better afterlife. The Lord owned all the lands and was the political and economic authority. All the disputes were solved by the Lord of the Manor.
The Feudal and Manor systems were widely practiced in the medieval ages, but were slowly abolished over time.