Whats the difference between a paragliding rescue chute and a parachute? Whats the difference betweem a paragliding rescue chute and a parachute and could I use a parachute as a paragliding rescue chute and what would be a disadvantage/advantage?

At least these points are imortant: Stablity, descent rate, manoeuvrability, opening speed, reliablity.

I'm asking because I've found articles (in german) which make the argument that the current rescue systems for paragliders are a mistake and that "BASE systems" are starting to beeing used in the acro scene. However I could not find details.


dhv.de -> Rettungsgeräte
x-dreamfly.ch -> Retterproblematik




Paragliding rescue chutes are typicly round canopies but there are also other special forms.



Military troop parachutes are also round canopies.



So are chutes used for space exploration.



While parachutes are rectangular.



And also paragliders are rectangular.





Round canopies are said to have a slower descent rate, are more stable then other forms, are simple and open faster and are small but they are not feasible to manoeuvre but I could not find references to back up those claims.
Drawbacks of a skydiving emergency reserve parachute compared to a paragliding emergency parachute would likely include excess bulk and weight, and possibly a longer time to complete the opening sequence-- though perhaps the latter point would not apply to a parachute intended for BASE jumping.  If one has room for the skydiving emergency reserve parachute in their harness, and one is engaged in a high-risk style of flying such as aerobatics, it might make some sense to consider flying with it rather than a purpose-designed paragliding emergency parachute.  

For more see related answer Can a paraglider rescue chute and its pilot handle terminal velocity?

It sounds like you have a more than merely academic interest in this topic; if so I'm sure you'll do further research, and we'll look forward to seeing a detailed self-answer to one or both of these questions in the future.