Quoting a publication from the Jakarta State University, here is the explanation:
Rhythmic signifies symmetry, proportion, and division, as A. J. Goodrich wrote in Complete Musical Analysis. The definition of symmetry is the similarity in each part, such as the written note value must be the same in its part whether it is a strong or weak beat.
Proportion is a balanced ratio between notes and their metric. The division is the rhythmic division into a single unit. Rhythmic relates not only to note value but also to the accent of whole phrases and parts of each other’s movements. It describes the regularity of change, with the effect of movement on our minds.
Melody is the interaction between a set of notes and rhythms. Therefore, The melody contains unity, diversity, climax point or focus, and comparability (the ability to understand). Melody is the movement of notes that have a special relationship to create a certain shape.
Melodies in musical works are like words in literature. Therefore, The notes are strung together to convey the composer’s message to the listeners. So a melody is a note that is arranged rhythmically by an author to achieve the focus of the songwriter’s wishes.
Harmony or chorus is a combination of two or more tones, which differ in high and low and are sounded simultaneously. Then, The basis of the chorus is the trinada – a chord combination of three notes consisting of the basic chord unit, the top note, and the quint tone.