cuneiform vs wedge-shaped

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

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

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

Other synonyms of cuneiform include cuneal.

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

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