1.  autarchy(n = noun.state) autarky - economic independence as a national policy;
is a kind of independence, independency
Derived form adjective autarchical₁

2.  autarchy(n = noun.group) autocracy - a political system governed by a single individual;
is a kind of form of government, political system
has particulars: monarchy, absolutism, authoritarianism, caesarism, despotism, dictatorship, monocracy, one-man rule, shogunate, stalinism, totalitarianism, tyranny
Derived form adjective autarchical₁

1.  Self-sufficiency, especially economic self-sufficiency as applied to nations. Milton. [1913 Webster]

2.  same as autarky. [WordNet 1.5]

autarchy, n. (pl. -ies)
1 absolute sovereignty.
2 despotism.
3 an autarchic country or society.

Derivative:
autarchic adj. autarchical adj.

Etymology:
mod.L autarchia (as AUTO-, Gk -arkhia f. arkho rule)