balance of power vs equilibrium

balance of power and equilibrium both are nouns.

Word	Noun	Adjective	Verb	Adverb
balance of power	Yes	No	No	No
equilibrium	Yes	No	No	No

As nouns, equilibrium is a hypernym of balance of power; that is, equilibrium is a word with a broader meaning than balance of power:

balance of power (noun)	equilibrium (noun)
an equilibrium of power between nations	a sensory system located in structures of the inner ear that registers the orientation of the head
	a chemical reaction and its reverse proceed at equal rates
	equality of distribution
	a stable situation in which forces cancel one another