unfaltering vs unshakable

unfaltering and unshakable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unfaltering	No	Yes	No	No
unshakable	No	Yes	No	No

As adjectives, unfaltering and unshakable are synonyms defined as:

unfaltering and unshakable: marked by firm determination or resolution; not shakable

Other synonyms of unfaltering include firm, steadfast, steady, stiff, unbendable, unwavering.

unfaltering (adjective)	unshakable (adjective)
marked by firm determination or resolution; not shakable	without flaws or loopholes
	marked by firm determination or resolution; not shakable