The researcher of this paper has found that poetry and lyrics are similar and can be compared in several ways. However, there are not many studies about this. Learning the differences and similarities in poetry and lyrics can help writers enhance their creative abilities and step up their understanding in musical ways like tempo and in writing ways like words. Based on the previous literature review, the researcher has generally summed them up and drawn some conclusions. In the introduction, some relationships between poetry and lyrics were illustrated and some existing problems were raised. It also generalized the study ways and aspects of this paper, giving an overall view of the whole passage. This paper analyzed imagery perspective at first and found that there are no obvious distinctions; in the way of content, the researcher first listed some elements in poem writing and then explained both differences and common grounds in the aspect of thought expressing, narrating content and interactions with readers or the audience, raising several examples of lyrics in stage performing. The paper discussed their dissimilitude in forms. Next, the researcher studied the language processing of the two issues, analyzing poetry and lyrics from words using translation and a rhetorical skill: repetition.