holographical vs holographic

holographical and holographic both are adjectives.

Word	Noun	Adjective	Verb	Adverb
holographical	No	Yes	No	No
holographic	No	Yes	No	No

As adjectives, holographical and holographic are synonyms defined as:

holographical (adjective)	holographic (adjective)
written entirely in one's own hand	written entirely in one's own hand
	of or relating to holography or holograms
	written wholly in the handwriting of the signer