5684
The gravity , and hence the pressure , on the surface of a giant star is much lower than for a dwarf star because the radius of the giant is much greater than a dwarf of similar mass .
 astronomical object: giant star; astronomical object: dwarf star
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 astronomical object: giant star; astronomical object: dwarf star