The Difference Between Tarawih and Qiyam, and Lengthening the Prayer in the Last Ten Days

Q: Is there a difference between tarawih and qiyam? And is there evidence for specifying the last ten days with lengthening the standing, bowing, and prostrating?

A: All prayer in Ramadan is called qiyam, as the Prophet (peace and blessings be upon him) said: . So if one stands with the imam for as much as is easy for him, it is called qiyam. However, in the last ten days, it is recommended to lengthen the prayer; because it is prescribed to keep these nights alive with prayer, recitation, and supplication. This is because the Messenger (peace and blessings be upon him) used to keep the entire night alive in the last ten days. For this reason, lengthening the prayer was prescribed in these days, just as the Prophet (peace and blessings be upon him) lengthened it. He used to recite in some nights Surat al-Baqarah, Surat al-Nisa, and Surat Aal 'Imran in a single rak'ah.
The point is that the Prophet (peace and blessings be upon him) used to lengthen the prayer in the last ten days and keep them alive. Therefore, it was prescribed for people to keep them alive and lengthen the prayer in them so that they may follow his example (peace and blessings be upon him). This is unlike the first twenty days, for the Prophet (peace and blessings be upon him) did not keep them alive; he would stand in prayer and then sleep, as mentioned in the hadiths. But in the last ten days, he (peace and blessings be upon him) would keep the entire night alive, wake up his family, and tighten his waist sash (peace and blessings be upon him). And because there is a blessed night in them: Laylat al-Qadr.