numerical vs numeral

numerical is not a noun while numeral is a noun.

Word	Noun	Adjective	Verb	Adverb
numerical	No	Yes	No	No
numeral	Yes	Yes	No	No

As adjectives, numerical and numeral are synonyms defined as:

Other synonyms of numerical include numeric.

numerical (noun)	numeral (noun)
	a symbol used to represent a number
	a word expressing a number.

numerical (adjective)	numeral (adjective)
relating to or having ability to think in or work with numbers	of or relating to or denoting numbers
of or relating to or denoting numbers
measured or expressed in numbers