While a wire supported cup provides the highest level of support for the front, it is often paired with multiple types of backings and steals which distribute comfort in the right place. A hook and hoop back tends to be the most secure and consistent comfort, but a tie back can offer the most flexibility. When looking for a triangle style, a banded chest can offer similar front support and is often paired with buckle or hook backs as well.
A Monokini is a swimsuit which looks like a one piece from one side, often the front, and looks like a bikini from the other side, often the back. So it gets it name from being physically one piece swimwear, but wears and looks like a two piece bikini.
Different suit linings are for different functions and styles of comfort. A lined suit is generally constructed in a way where the suit is single sided and the wearer is looking to use the garment for a long period of time per use, which can include performance and durability needs.
The double sided is generally the same outside fabric as the inside fabric. Usually is constructed to be single sided swimwear, and can be more comfortable in short term use but could be less observant than lining fabric which can cause discomfort if worn for longer durations.
Lastly, a reversible swimsuit is a garment which wears identical on both the inside and outside of the suit. A reversible suit can offer numerous looks in a single piece, but if often priced slightly higher to make up for the loss in fabric and styles.
Many bandeau tops come with wire or brazier padding to give form and support across the front. For larger sizes the brazier pad is usually coupled with a hook and loop backing or a buckle to offer the right support.
A swim skirt and skorts do look very similar but are quite different from a users point of view. First the construction of a swim skirt consists of only the outer layer of fabric with no interior coverage. Generally the Swim Skirt is to wear over a swim bottom. The Skort is a single piece of swimwear that incorporates both the exterior skirt and the inside swim bottom into a single piece of swimwear. The two styles greatly differ from one another in individual style and comfort of the person wearing it. A swim skirt is perfect for layering up or down when you want more coverage or less coverage depending on your comfort. The Skort is a ready to wear style which generally keeps you covered up and comfortable without the need for layering.
The primary difference between a full coverage swim bottom and a cheeky swim bottom is the coverage area of the back. A cheeky bottom will generally show more "cheek" offering minimal coverage in the back, but not as much as a thong. Cheeky and full coverage is not necicarrily about sexy or not sexy, but designed to best fit multiple body shapes to offer attractive silouhetts for every shape body.