Although the terms are similar, neoliberalism is distinct from modern liberalism. Both have their ideological roots in the classical liberalism of the 19th century, which championed economic laissez-faire and the freedom (or liberty) of individuals against the excessive power of government.
The 'feudal system' is the name for a power structure where people held their land in return for promising loyalty, known as doing homage, and providing services such as working or fighting for their lord.
A broader definition of feudalism, as described by Marc Bloch (1939), includes not only the obligations of the warrior nobility but those of all three estates of the realm: the nobility, the clergy, and the peasantry bound by manorialism; this is sometimes referred to as a feudal society.