I know Ramadan. My question is RE Building Science. Can anyone answer the following: "what's the difference between efflorescence and rising damp."?

' Rising damp actually describes the movement of moisture upward through permeable building materials by capillary action. ' where efflorescence is a little different phenomena. Efflorescence could be result of rising damp but they are not obviously same as it is defined that 'Efflorescence (which means "to flower out" in French) is the dissolved salts deposited on the surface of a porous material (such as concrete or brick) that are visible after the evaporation of the water in which it was transported. The moisture that creates efflorescence often comes from groundwater, but rainwater can also be the source. Efflorescence alone does not pose a major problem, but it can be an indication of moisture intrusion, which may compromise the structural material.'

Efflorescence is caused through salt water used in Building (mortar mixes or Concrete work)and appears on the surface of the wall as a flaky white substance which can be removed only through hard brushing and washing of the affected area and keeping it dried, while raising damp is the moisture content of the ground under the over sight concrete that comes up to the concrete floor and walls (ground floor concrete) and can only occur if the oversight concrete floors and walls are not well damp proven by laying a layer or2 of damp prove course under your ground floor insulation, on top of the well rammed hard core and also turning the same DPC at right angle up the walls (225mm above the floor) and into the mortar joint of2 courses of brickwork or a course of block wall immediately above the floor (see Building Construction by Ivor Sealy)

efflorescence is dry rising damp is wet