1, the difference in definition: thimble is a rhetorical device, which is often used in literary works to enhance the coherence of sentences and modify the phoneme relationship between two sentences. It means that the same words are used at the end of the previous sentence and the beginning of the next sentence to achieve the effect of modification, cohesion and echo. Thimble is often used in poetry, prose and other literary works, which can increase the artistic sense and rhythm of the works. Fish biting its tail is a common musical structure in music works, which is used to enhance the coherence of melody and modify the phoneme relationship between two phrases. It means that the same words are used at the end of the previous sentence and the beginning of the next sentence to achieve the effect of modification, cohesion and echo. Fish biting its tail is often used in melody construction in music works, which can increase the coherence of melody and the sense of rhythm of music.
2. The difference of function: the function of thimble is to establish phonetic connection between sentences by using the same words or phrases, and to enhance the coherence and decoration between sentences. It can make sentences more beautiful, have a stronger sense of rhythm and increase the artistic sense of works. The function of fish biting tail is to establish phoneme connection between music melodies by using the same words or phrases, and to enhance the coherence and modification effect between melodies. It can make music melody more coherent and harmonious, and increase the sense of rhythm of music.