Complex sentence: Karthika started her career as an actress at age of 17 with the Telugu film "Josh" in 2009 while Thulasi started her acting career at age of 14 with the Maniratnam film Kadal in 2012.
Split into simpler sentences: Karthika started her career as an actress at age of 17 with the Telugu film "Josh" in 2009. Her other daughter Thulasi Nair started her acting career at age of 14 with the Maniratnam film Kadal in 2012.