hierarchic vs hierarchical

hierarchic and hierarchical both are adjectives.

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

As adjectives, hierarchic and hierarchical are synonyms defined as:

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

Other synonyms of hierarchic include hierarchal.

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