Interior walls upper floor lightweight construction instead of masonry?

Good evening,

Ui, you lose me with the abbreviations - what are KSV, KSL, KVH, OSB and GKB?

KSV = Calcium Sand Full concrete
KSL = Calcium Sand Hollow concrete
KVH = Construction Solid Wood
OSB = Oriented Strand Board or simply chipboard
GKB = Gypsum Cardboard Panel

Regards from the Rhineland

Construction expert