inclined vs diagonal

inclined is not a noun while diagonal is a noun.

Word	Noun	Adjective	Verb	Adverb
inclined	No	Yes	No	No
diagonal	Yes	Yes	No	No

inclined (noun)	diagonal (noun)
	a punctuation mark (/) used to separate related items of information
	an oblique line of squares of the same color on a checkerboard
	(mathematics) a set of entries in a square matrix running diagonally either from the upper left to lower right entry or running from the upper right to lower left entry
	a line or cut across a fabric that is not at right angles to a side of the fabric
	(geometry) a straight line connecting any two vertices of a polygon that are not adjacent

inclined (adjective)	diagonal (adjective)
at an angle to the horizontal or vertical position	having an oblique or slanted direction
(often followed by `to') having a preference, disposition, or tendency	connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face
having made preparations