Are both Dhaulagiri and Khunyang Chhish high mountains?
yes
Title: Dhaulagiri
Passage: The Dhaulagiri massif in Nepal extends 120 km from the Kaligandaki River west to the Bheri.  This massif is bounded on the north and southwest by tributaries of the Bheri River and on the southeast by Myagdi Khola.  Dhaulagiri I is the seventh highest mountain in the world at 8167 m above sea level.  It was first climbed on May 13, 1960 by a Swiss/Austrian/Nepali expedition.
Title: Gandaki River
Passage: The Gandaki River (also known as the Narayani in southern Nepal and the Gandak in India) is one of the major rivers of Nepal and a left bank tributary of the Ganges in India.  In Nepal the river is notable for its deep gorge through the Himalayas and its enormous hydroelectric potential.  It has a total catchment area of 46300 km2 , most of it in Nepal.  The basin also contains three of the world's 14 mountains over 8000 m , Dhaulagiri, Manaslu and Annapurna I.  Dhaulagiri is the highest point of the Gandaki basin.  It lies between the similar Kosi system to the east and the Karnali (Ghaghara) system to the west.
Title: Khunyang Chhish
Passage: Khunyang Chhish or Kunyang Chhish (Urdu: ‎ )is the second-highest mountain in the Hispar Muztagh, a subrange of the Karakoram mountains of Pakistan.  Alternate variations of the name include Kunyang Kish and Khiangyang Kish, among others.  Its height, also sometimes given as 7823 m , is ranked 21st in the world and 8th in Pakistan.
Khunyang Chhish Dhaulagiri