A cap is a flat headgear, usually with a visor. Caps have crowns that fit very close to the head. They made their first appearance as early as 3200 BC. The origin of the word "cap" comes from the Old French word "chapeau" which means "head covering". Over time, the word has evolved and changed its meaning, but it still retains its association with headwear. Caps typically have a visor, or no brim at all. They are popular in casual and informal settings, and are seen in sports and fashion. They are typically designed for warmth, and often incorporate a visor to block sunlight from the eyes. They come in many shapes, sizes, and are of different brands. Baseball caps are one of the most common types of cap.
Ascot cap
Ayam
Baggy green
Balmoral
Beanie (North America)
Bearskin
Beret
Biretta
Busby
Canterbury cap
Cap and bells
Cap of maintenance
Casquette
Caubeen
Caul
Coif
Combination cap (also known as a service cap)
Coppola
Cricket cap
Deerstalker
Do-rag
Dutch cap
Dixie cup, an enlisted sailor's cap, also worn by first-year midshipmen at Annapolis
Fez
Flat cap (also known as a Kerry cap in Ireland (slang of Paddy cap – see also Caubeen), longshoreman's cap, scally cap, Wigens cap, ivy cap, golf cap, duffer cap, driving cap, bicycle cap, Jeff cap, or in Scotland, bunnet, or in Wales, Dai cap, or in England or New Zealand, cheese-cutter)
Forage cap
Gandhi cap
Garrison cap
Glengarry
Greek fisherman's cap (also known as a Breton cap or a fiddler's cap)
Juliet cap
Karakul
Kepi
Kippah (also known as yarmulke or skull cap) — worn by Jewish males
Knit cap (also known as a Tuque, stocking cap, wool cap, watch cap, ski cap, bobble hat)
Kufi (also known as a kofia; an African cap worn with a dashiki)
Lika cap
M43 field cap
Mao cap
Meyrick Helmet
Monmouth cap
Newsboy cap
Nightcap
Nurse cap
Ochipok
Papakhi
Patrol cap
Peaked cap
Phrygian cap
Rastacap
Sailor cap
Shako
Shower cap
Sindhi cap
Sports visor
Square academic cap
Stormy Kromer cap
Swim cap
Tam o' Shanter
Taqiyah, worn by Muslim males
Toque
Tubeteika
Ushanka
Utility cover
Zucchetto
Baseball cap
Fitted cap
Snapback
Trucker hat
Caps might have started off as a way to keep people shaded from the sun, but now they are much more than that.