repetition vs ploce

repetition and ploce both are nouns.

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

As nouns, ploce is a hyponym of repetition; that is, ploce is a word with a more specific, narrower meaning than repetition:

repetition: the repeated use of the same word or word pattern as a rhetorical device
ploce: (rhetoric) repetition to gain special emphasis or extend meaning

repetition (noun)	ploce (noun)
the act of doing or performing again	(rhetoric) repetition to gain special emphasis or extend meaning
the repeated use of the same word or word pattern as a rhetorical device
an event that repeats