primeval vs primordial

primeval and primordial both are adjectives.

Word	Noun	Adjective	Verb	Adverb
primeval	No	Yes	No	No
primordial	No	Yes	No	No

As adjectives, primeval and primordial are synonyms defined as:

primeval and primordial: having existed from the beginning; in an earliest or original stage or state

Other synonyms of primeval include aboriginal, primaeval, primal.

primeval (adjective)	primordial (adjective)
having existed from the beginning; in an earliest or original stage or state	having existed from the beginning; in an earliest or original stage or state