reduplication

nouns

repetition of the final words of a sentence or line at the beginning of the next
the syllable added in a reduplicated word form
is a type of (narrower)
a unit of spoken language larger than a phoneme
"the word `pocket' has two syllables"
a word formed by or containing a repeated syllable or speech sound (usually at the beginning of the word)
is a type of (narrower)
a unit of language that native speakers can identify
"words are the blocks from which sentences are made"; "he hardly said ten words all morning"
the act of repeating over and again (or an instance thereof)