hieroglyphical vs hieroglyphic

hieroglyphical is not a noun while hieroglyphic is a noun.

Word	Noun	Adjective	Verb	Adverb
hieroglyphical	No	Yes	No	No
hieroglyphic	Yes	Yes	No	No

As adjectives, hieroglyphical and hieroglyphic are synonyms defined as:

hieroglyphical and hieroglyphic: written in or belonging to a writing system using pictorial symbols

As adjectives, hieroglyphical and hieroglyphic are synonyms defined as:

hieroglyphical (noun)	hieroglyphic (noun)
	a writing system using picture symbols; used in ancient Egypt
	writing that resembles hieroglyphics (usually by being illegible)

hieroglyphical (adjective)	hieroglyphic (adjective)
written in or belonging to a writing system using pictorial symbols	written in or belonging to a writing system using pictorial symbols
resembling hieroglyphic writing	resembling hieroglyphic writing