Semantics
Many words have simple meanings understood by all
Some words are perceived and understood differently by different people, hindering
communication
Among these are:
democrat, republican, communism, capitalism, socialism, human rights, elections, and
dozens more in nearly every field of human endeavor, they no longer have clear
meanings
Some words are associated with certain theories, among these are:
profit, capital, labor, markets, -- with capitalism
public good, dialectics, labor, inevitability, -- with socialism
and dozens more in nearly every field of human endeavor
And set of words can be twisted with semantics into whichever agenda is being pushed
Rarely are politics, public policy and related theories ever discussed without ambiguous
words of no meaning, so these discussions are pointless