polyptoton
paregmenon

The technical name for the device is polyptoton .

In inflected languages polyptoton is the same word being repeated but appearing each time in a different case.

In line 12, Shakespeare repeats two words with the same root - "grace" and "graced", using a rhetorical style known as polyptoton.

A rarer, more constructed form is polyptoton, the stylistic repetition of the same word or words derived from the same root: "

In addition, homographic puns are sometimes compared to the stylistic device antanaclasis, and homophonic puns to polyptoton.

Vickers also attempts to show that Shakespeare is much more adapt at employing rhetorical devices than Peele; and gives numerous examples throughout the play of the use of antimetabole, anadiplosis, epanalepsis, epizeuxis, articulus, epanorthosis, epistrophe, aposiopesis, anaphora, polyptoton, synoeciosis, polysyndeton and asteismus.