True rhyme is a literary form where the sound correspondences between two words is exact the first consonant might be different but the last one as well as the vowel sound and stressed syllable must be the same, then Rein and Brain present all of this sound characteristics in their pronunciation, they are a clear example of true rhyme.
Repetition usually tells us that the someone wants a large emphasis on this word: that it has a significant meaning to them, and/or possibly the whole tale itself.
