hyperkinetic syndrome vs attention deficit hyperactivity disorder

hyperkinetic syndrome and attention deficit hyperactivity disorder both are nouns.

Word	Noun	Adjective	Verb	Adverb
hyperkinetic syndrome	Yes	No	No	No
attention deficit hyperactivity disorder	Yes	No	No	No

As nouns, hyperkinetic syndrome and attention deficit hyperactivity disorder are synonyms defined as:

hyperkinetic syndrome and attention deficit hyperactivity disorder: a condition (mostly in boys) characterized by behavioral and learning disorders

Other synonyms of hyperkinetic syndrome include ADD, ADHD, attention deficit disorder, MBD, minimal brain damage, minimal brain dysfunction.

hyperkinetic syndrome (noun)	attention deficit hyperactivity disorder (noun)
a condition (mostly in boys) characterized by behavioral and learning disorders	a condition (mostly in boys) characterized by behavioral and learning disorders