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.
In the 19th century the adjective feudal evolved into a noun: feudalism. The term feudalism is recent, first appearing in French in 1823, Italian in 1827, English in 1839, and in German in the second half of the 19th century. The term feudal or feodal is derived from the medieval Latin word feodum.