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The bikini is typically a women's swimsuit, either a one-piece or a two-piece. For the two-piece, one part of the attire is covering the breasts; the other the groin and, optionally, part or all of the buttocks, leaving an uncovered area between the two. The bikini is often worn in hot weather, while swimming or sunning. A bikini is also often worn as an undergarment to the wetsuit for waterskiing, scuba diving, surfing, and wakeboarding...

Waste (rubbish, trash, refuse, garbage, or junk) is unwanted or unusable materials. Litter is waste which has been disposed of improperly, particularly waste which has been carelessly disposed of in plain sight, as opposed to waste which has been dumped to avoid paying for waste disposal fees. In living organisms, waste is the unwanted substances or toxins that are expelled from them. More commonly, waste refers to the materials that are disposed of in a system of waste management...

A twin is one of two offspring produced in the same pregnancy. Twins can either be identical (in scientific usage, "monozygotic"), meaning that they develop from one zygote that splits and forms two embryos, or fraternal ("dizygotic") because they develop from two separate eggs that are fertilized by two separate sperm. In contrast, a fetus which develops alone in the womb is called a singleton, and the general term for one offspring of a multiple birth is multiple...