Simple categories matching obstructive:

• disease,
• tree,
• disorder,
• material,
• symptom,

Members with property obstructive:

• asthma,
• meconium_impaction,
• cystic_fibrosis,
• emphysema,
• related_condition,
• lung_emphysema,
• pyloric_stenosis,
• strontium_sulfate,
• bronchitis,
• pine,
• chalazion,
• pimple,
• hernia,
• nausea,
• hordeolum,
• ileus,