echolalia vs repetition

echolalia and repetition both are nouns.

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

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

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

Other hypernyms of echolalia include repeating.

echolalia (noun)	repetition (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	the repeated use of the same word or word pattern as a rhetorical device
	an event that repeats