historical vs language

historical is not a noun while language is a noun.

Word	Noun	Adjective	Verb	Adverb
historical	No	Yes	No	No
language	Yes	No	No	No

historical (noun)	language (noun)
	the mental faculty or power of vocal communication
	the cognitive processes involved in producing and understanding linguistic communication
	a systematic means of communicating by the use of sounds or conventional symbols
	(language) communication by word of mouth
	the text of a popular song or musical-comedy number
	a system of words used to name things in a particular discipline

historical (adjective)	language (adjective)
used of the study of a phenomenon (especially language) as it changes through time
of or relating to the study of history
belonging to the past; of what is important or famous in the past
having once lived or existed or taken place in the real world as distinct from being legendary