inexorable vs relentless

inexorable and relentless both are adjectives.

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

As adjectives, inexorable and relentless are synonyms defined as:

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

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

inexorable (adjective)	relentless (adjective)
not to be placated or appeased or moved by entreaty	never-ceasing
impervious to pleas, persuasion, requests, reason	not to be placated or appeased or moved by entreaty