equilibrium vs state of affairs

equilibrium and state of affairs both are nouns.

Word	Noun	Adjective	Verb	Adverb
equilibrium	Yes	No	No	No
state of affairs	Yes	No	No	No

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

equilibrium: a stable situation in which forces cancel one another
state of affairs: the general state of things; the combination of circumstances at a given time

Other hypernyms of equilibrium include situation.

equilibrium (noun)	state of affairs (noun)
a sensory system located in structures of the inner ear that registers the orientation of the head	the general state of things; the combination of circumstances at a given time
a chemical reaction and its reverse proceed at equal rates
equality of distribution
a stable situation in which forces cancel one another