notation vs writing

notation and writing both are nouns.

Word	Noun	Adjective	Verb	Adverb
notation	Yes	No	No	No
writing	Yes	No	No	No

As nouns, writing is a hypernym of notation; that is, writing is a word with a broader meaning than notation:

notation: the activity of representing something by a special system of marks or characters
writing: the activity of putting something in written form

Other hypernyms of notation include committal to writing.

As nouns, writing is a hypernym of notation; that is, writing is a word with a broader meaning than notation:

notation: a technical system of symbols used to represent special things
writing: letters or symbols that are written or imprinted on a surface to represent the sounds or words of a language

notation (noun)	writing (noun)
the activity of representing something by a special system of marks or characters	the activity of putting something in written form
a technical system of symbols used to represent special things	the act of creating written works
a comment or instruction (usually added)	the work of a writer; anything expressed in letters of the alphabet (especially when considered from the point of view of style and effect)
	letters or symbols that are written or imprinted on a surface to represent the sounds or words of a language
	(usually plural) the collected work of an author