cubical vs cube

cubical is not a noun while cube is a noun.

Word	Noun	Adjective	Verb	Adverb
cubical	No	Yes	No	No
cube	Yes	No	Yes	No

cubical (noun)	cube (noun)
	a block in the (approximate) shape of a cube
	any of several tropical American woody plants of the genus Lonchocarpus whose roots are used locally as a fish poison and commercially as a source of rotenone
	the product of three equal terms
	a hexahedron with six equal squares as faces
	a three-dimensional shape with six square or rectangular sides

cubical (adjective)	cube (adjective)
shaped like a cube

cubical (verb)	cube (verb)
	raise to the third power
	cut into cubes