echolalia vs repeating

echolalia and repeating both are nouns.

Word	Noun	Adjective	Verb	Adverb
echolalia	Yes	No	No	No
repeating	Yes	No	No	No

As nouns, repeating is a hypernym of echolalia; that is, repeating is a word with a broader meaning than echolalia:

echolalia: (psychiatry) mechanical and meaningless repetition of the words of another person (as in schizophrenia)
repeating: the act of doing or performing again

Other hypernyms of echolalia include repetition.

echolalia (noun)	repeating (noun)
(psychiatry) mechanical and meaningless repetition of the words of another person (as in schizophrenia)	the act of doing or performing again
an infant's repetition of sounds uttered by others