Tarawih are special Sunnah prayers involving reading long portions of the Quran, and performing up to 20 rakahs, which are performed only in the Islamic month of Ramadan. The entire Quran is recited in the Tarawih prayers at a mosque, typically at the rate of one Juz' per night.
Tarawih prayer at the Great Mosque of Kairouan, Tunisia
Tarawih prayer at Taipei Grand Mosque, Taiwan
Salah, is the principal form of worship in Islam. Facing Mecca, it consists of units called rak'a, during which the Quran is recited, and prayers from the Sunnah are typically said. The number of rak'a varies from prayer to prayer. Minor details of performing salah may differ according to the madhhab of the person performing it.
The prayer room in Khonakhan Mosque, Uzbekistan
Various prescribed movements in salah, which collectively constitute a rak'ah. From left to right: rukū', qiyām/i'tidal, sujūd, takbīr and qu'ūd/julūs.
Women performing the Friday prayer at a mosque, Ohio, US
A Sunni Muslim (left) and Shia Muslim (right) performing the Friday prayer in Tehran. Some Sunnis perform salah with the hands clasped ("qabd"), while Shia offer salah with their hands at their sides ("sadl").