Pelvic Inflammatory Disease (PID) PID can be caused by many different bacteria, including Chlamydia and gonorrhea. It occurs when these bacteria move up from the vagina or cervix into the uterus and other reproductive organs.
Pop and Rock Ballads. The term ballad is used in modern music to express an âemotional love songâ. A rock ballad is a modern song in which the word ballad appears in the title of a song, for example in âThe Ballad of John and Yokoâ by The Beatles and âThe Ballad of Billy the Kidâ by Billy Joel.
Types of Couplets. 1  Elegiac Couplet: This example of couplet was used primarily in ancient Greek poetry for themes on a smaller scale than the epic. 2  Heroic Couplet: A heroic couplet is fairly similar to the elegiac couplet in that it is generally closed and self-contained, and thus has meaning on its own.