Is a sentence containing two similar kanji any known figure of speech


Searching for Japanese poetry or simply reading song lyrics, I can find very
often some sentences that contain two kanji characters of specific properties:
They are usually close to each other, one is a compound of the another one (or
they can just look similar) but usually their meaning is different.

Some examples:

> 儚く夢 [hakanaku yume, fleeting dream]
>
> 救いを求めて [sukui o motomete, craving for help]
>
> 言ったこと信じられない [itta koto shinjirarenai, unbelievable what was said]

_(the last one did not come from the real life but it is only an example so it
can be grammatically wrong)_

My question is: Is it some kind of identified figure of speech like
alliteration or assonance in English? If yes, what is the name of it?




I think these are _basically_ coincidences, although they may not be total
coincidences because related words tend to share the same radical anyway (愛
and 恋 both have 心, for example). Normally, Japanese lyricists do not care
about kanji radicals as English speakers try to rhyme lines. Of course there
should be some poets who intentionally tried to do this as a wordplay in the
past, but this is not common at all.




I think these are _basically_ coincidences, although they may not be total
coincidences because related words tend to share the same radical anyway (愛
and 恋 both have 心, for example). Normally, Japanese lyricists do not care
about kanji radicals as English speakers try to rhyme lines. Of course there
should be some poets who intentionally tried to do this as a wordplay in the
past, but this is not common at all.

