"Scimitar" is simply the European version of "shamshir", the Persion word for cavalry sabre. A cavalry sabre like the shamshir is a curved, slashing sword, about the size of a typical knight's sword (what D&D calls a "longsword").
The heavy, curved sword with a wider blade near the end than near the hilt is a falchion, and it's actually a European weapon -- despite the common cartoon depiction of Arabs' swords.
Almost entirely different is the modern sport-fencing sabre which weighs just a pound. That saber would naturally be quite "finesse-able"; it was designed for just that purpose.
The heavy, curved sword with a wider blade near the end than near the hilt is a falchion, and it's actually a European weapon -- despite the common cartoon depiction of Arabs' swords.
Almost entirely different is the modern sport-fencing sabre which weighs just a pound. That saber would naturally be quite "finesse-able"; it was designed for just that purpose.