equilibrium vs sense of balance

equilibrium and sense of balance both are nouns.

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

As nouns, equilibrium and sense of balance are synonyms defined as:

equilibrium and sense of balance: a sensory system located in structures of the inner ear that registers the orientation of the head

Other synonyms of equilibrium include labyrinthine sense, sense of equilibrium, vestibular sense.

equilibrium (noun)	sense of balance (noun)
a sensory system located in structures of the inner ear that registers the orientation of the head	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