WAn Albarrana tower is a defensive tower detached from the curtain wall and connected to it by a bridge or an arcade.
WAn alcazaba, alcáçova or alcassaba is a Moorish fortification in Spain and Portugal. The word derives from the Arabic word al-qaṣabah (القَصَبَة), a walled fortification in a city.
WAn alcázar is a type of Moorish castle or palace in Spain and Portugal built during Muslim rule although the term is also used for many medieval castles built by Christians on earlier Roman, Visigothic or Moorish fortifications. Most of the alcázars were built between the 8th and 15th centuries. The term is frequently used as a synonym for castillo or castle; palaces built by Christian rulers were also often called alcázars.
WA kasbah, also spelled casbah or qasbah, more rarely as qasaba, gasaba or qasabeh, in India also as qassabah, is a type of fortress, a citadel. By extension, the term can also refer to a medina quarter. In various languages, the Arabic word, or local words borrowed from the Arabic word, can also refer to a keep, an old town, a watchtower or a blockhouse.
WKsar or qsar, plural ksars, qsars, ksour or qsour, is the North African term for "fortified village," from Arabic qaṣar (قَصَر), itself possibly loaned from Latin castrum. The term generally refers to a Berber fortified village.
WQalat or kalata (قلعه) in Persian, and qal'a(-t) or qil'a(-t) in Arabic, means 'fortress', 'fortification', 'castle', or simply 'fortified place'. The common English plural is "qalats".
WA ribāṭ is an Arabic term for a small fortification built along a frontier during the first years of the Muslim conquest of the Maghreb to house military volunteers, called murabitun, and shortly after they also appeared along the Byzantine frontier, where they attracted converts from Greater Khorasan, an area that would become known as al-ʻAwāṣim in the ninth century CE.