Final answer:
Individual notes played louder or longer than others have an accent, which highlights them in the music.
Step-by-step explanation:
When individual notes are stressed by being played louder or longer than the surrounding notes, they are said to have an accent. An accent in music can attract the listener's attention to a particular note or make it stand out within a passage, essentially 'highlighting' it amidst the melody. This is different from articulation, which refers to how notes are connected or separated from each other, and from dynamics, which generally refers to the volume of the music (how loud or soft it is played) though accents can affect dynamics. The term tempo refers to the speed at which a piece of music is played, not how notes are emphasized within it.