Rakaat:

Literally means "bending of the torso from an upright position". In kitaabus salaat it refers to one unit of salaat which comprises of the standing, bowing and prostrating postures.

Ramadaan:

Refers to the ninth month of the Islamic calendar. It is in this month that the fast is observed. This is the most sacred month of the Islamic calendar.

Rukn:

Literally means "basis or basic element". In Islamic jurisprudence it refers to the basic element or elements of any act of ibaadah without which that act will be incomplete.