wedge-shaped vs cuneiform

wedge-shaped is not a noun while cuneiform is a noun.

Word	Noun	Adjective	Verb	Adverb
wedge-shaped	No	Yes	No	No
cuneiform	Yes	Yes	No	No

As adjectives, wedge-shaped and cuneiform are synonyms defined as:

Other synonyms of wedge-shaped include cuneal.

wedge-shaped (noun)	cuneiform (noun)
	an ancient wedge-shaped script used in Mesopotamia and Persia

wedge-shaped (adjective)	cuneiform (adjective)
shaped like a wedge	of or relating to the tarsal bones (or other wedge-shaped bones)
(of a leaf shape) narrowly triangular, wider at the apex and tapering toward the base	shaped like a wedge