inexorable vs stern

inexorable is not a noun while stern is a noun.

Word	Noun	Adjective	Verb	Adverb
inexorable	No	Yes	No	No
stern	Yes	Yes	No	No

As adjectives, inexorable and stern are synonyms defined as:

inexorable and stern: not to be placated or appeased or moved by entreaty

Other synonyms of inexorable include grim, relentless, unappeasable, unforgiving, unrelenting.

inexorable (noun)	stern (noun)
	the rear part of a ship
	the fleshy part of the human body that you sit on

inexorable (adjective)	stern (adjective)
not to be placated or appeased or moved by entreaty	severe and unremitting in making demands
impervious to pleas, persuasion, requests, reason	not to be placated or appeased or moved by entreaty
	of a stern or strict bearing or demeanor; forbidding in aspect
	severely simple