invariant vs invariable

invariant and invariable both are nouns.

Word	Noun	Adjective	Verb	Adverb
invariant	Yes	Yes	No	No
invariable	Yes	Yes	No	No

invariant (noun)	invariable (noun)
a feature (quantity or property or function) that remains unchanged when a particular transformation is applied to it	a quantity that does not vary

invariant (adjective)	invariable (adjective)
unvarying in nature	not liable to or capable of change
unaffected by a designated operation or transformation