dysgraphia vs learning disorder

dysgraphia and learning disorder both are nouns.

Word	Noun	Adjective	Verb	Adverb
dysgraphia	Yes	No	No	No
learning disorder	Yes	No	No	No

As nouns, learning disorder is a hypernym of dysgraphia; that is, learning disorder is a word with a broader meaning than dysgraphia:

dysgraphia: impaired ability to learn to write
learning disorder: a disorder found in children of normal intelligence who have difficulties in learning specific skills

Other hypernyms of dysgraphia include learning disability.

dysgraphia (noun)	learning disorder (noun)
impaired ability to learn to write	a disorder found in children of normal intelligence who have difficulties in learning specific skills