mythical vs mythological

mythical and mythological both are adjectives.

Word	Noun	Adjective	Verb	Adverb
mythical	No	Yes	No	No
mythological	No	Yes	No	No

As adjectives, mythical and mythological are synonyms defined as:

mythical and mythological: based on or told of in traditional stories; lacking factual basis or historical validity

Other synonyms of mythical include fabulous, mythic, mythologic.

mythical (adjective)	mythological (adjective)
based on or told of in traditional stories; lacking factual basis or historical validity	based on or told of in traditional stories; lacking factual basis or historical validity