hierarchic vs hierarchal

hierarchic and hierarchal both are adjectives.

Word	Noun	Adjective	Verb	Adverb
hierarchic	No	Yes	No	No
hierarchal	No	Yes	No	No

As adjectives, hierarchic and hierarchal are synonyms defined as:

hierarchic and hierarchal: classified according to various criteria into successive levels or layers

Other synonyms of hierarchic include hierarchical.

hierarchic (adjective)	hierarchal (adjective)
classified according to various criteria into successive levels or layers	classified according to various criteria into successive levels or layers