An air sleeping pad is inflated with air (by mouth, pump sack, or pump) to provide cushioning and, with internal insulation or reflective layers, warmth rated by R-value. Air pads are the most comfortable and packable type and can be very light, but they can be punctured and are noisier and pricier than foam.
Cold soaking is preparing backpacking meals by rehydrating food in cold water in a sealed container over time, instead of cooking with heat. It lets ultralight hikers leave the stove, fuel, and pot at home, saving weight and time, at the cost of meal variety, palatability, and warmth.
Dispersed camping is camping on public land — typically National Forest or BLM land — outside of developed campgrounds, with no facilities, fees, or services. It offers solitude and freedom but requires self-sufficiency and strict Leave No Trace practices, plus awareness of local rules on where you may camp.
Car camping means camping at a site you can drive right up to, so weight and bulk don't matter and you can bring large tents, coolers, chairs, and comforts. It's the most accessible, family-friendly form of camping, usually at established campgrounds, in contrast to backpacking where you carry everything on your back.
A rectangular sleeping bag has straight sides and no taper or hood, giving plenty of room to move and the option to unzip it into a blanket. It's comfortable and affordable for car camping and warm weather, but the extra dead air space makes it colder and heavier for its warmth than a mummy bag.
A bivy sack (bivouac sack) is a waterproof-breathable shell that slips over your sleeping bag as the most minimal one-person shelter. It adds warmth and weather protection with very little weight and packed size, favored by ultralight hikers, climbers, and alpinists, but is cramped and prone to condensation.
A tarp is a flat waterproof sheet pitched with cord, stakes, and trekking poles or trees to form a minimalist, highly versatile shelter. Tarps are very light and packable and can be configured many ways, but offer no bug protection or floor and require more skill to pitch well than a tent.
Condensation is the moisture that forms inside a tent when warm, humid air from your breath and body meets the cooler tent fabric and turns to water. It's a normal phenomenon, not a leak, but it can dampen gear; ventilation, site selection, and double-wall construction all help manage it.
A guy line (or guyline) is a cord running from a tent's fly or attachment points to a stake in the ground, used to tension the tent for a taut pitch and to anchor it against wind. Adjustable tensioners (line-loc or taut-line hitches) let you tighten them, dramatically improving stability in storms.
A vestibule is the covered area formed by the rainfly outside a tent's door, providing sheltered space to store boots, packs, and gear out of the rain without cluttering the sleeping area. Larger vestibules add cooking and entry space; many tents have one per door.