Modifiers matching primary:

• luminous,
• stellar,

Simple categories matching stellar:

• quantity,
• object,
• structure,
• process,
• system,
• body,
• interaction,
• primary,
• activity,
• motion,
• material,
• component,
• event,
• property,
• wind,
• agglomeration,
• evolution,
• medium,
• mass,
• phenomenon,
• cluster,