The difference between Autonomous and Sovereign

Autonomous as an adjective:

Self-governing. Intelligent, sentient, self-aware, thinking, feeling, governing independently.

Autonomous as an adjective:

Acting on one's own or independently; of a child, acting without being governed by parental or guardian rules.

Autonomous as an adjective (Celtic linguistics, of a verb form):

Used with no subject, indicating an unknown or unspecified agent; used in similar situations as the passive in English (the difference being that the theme in the English passive construction is the subject, while in the Celtic autonomous construction the theme is the object and there is no subject).

Sovereign as an adjective:

Exercising power of rule.

Sovereign as an adjective:

Exceptional in quality.

Sovereign as an adjective (now, _, rare):

Extremely potent or effective (of a medicine, remedy etc.).

Sovereign as an adjective:

Having supreme, ultimate power.

Sovereign as an adjective:

Princely; royal.

Sovereign as an adjective:

Predominant; greatest; utmost; paramount.

Sovereign as a noun:

A monarch; the ruler of a country.

Sovereign as a noun:

One who is not a subject to a ruler or nation.

Sovereign as a noun:

A gold coin of the United Kingdom, with a nominal value of one pound sterling but in practice used as a bullion coin.

Sovereign as a noun:

A very large champagne bottle with the capacity of about 25 liters, equivalent to 33⅓ standard bottles.

Sovereign as a noun:

Any butterfly of the tribe , or genus , as the and the viceroy.

Sovereign as a noun (UK, slang):

A large, garish ring; a .

Sovereign as a verb (transitive):

To rule over as a sovereign.