Modifiers matching death:

• social,
• sudden,
• neonatal,
• spiritual,
• maternal,
• ordinary,
• unnatural,
• coronary,
• medical,
• cardiac,
• neuronal,
• unexpected,
• common,
• female,
• violent,
• preventable,
• occupational,
• accidental,
• respiratory,
• unavoidable,
• related,
• abnormal,
• fetal,
• traumatic,
• surrounding,
• natural,

Simple categories matching respiratory:

• care,
• infection,
• structure,
• protection,
• disease,
• illness,
• toxin,
• disorder,
• condition,
• secretion,
• reflex,
• allergen,
• tube,
• sound,
• interval,
• effort,
• treatment,
• pathology,
• system,
• sensitivity,
• complication,
• virus,
• pathogen,
• symptom,
• cancer,
• tissue,
• machine,
• depressant,
• gas,
• chain,
• service,
• product,
• support,
• equipment,
• cover,
• drug,
• carcinogen,
• passage,
• signal,
• cell,
• hazard,
• muscle,
• organ,
• problem,
• connector,
• death,
• difficulty,
• component,
• failure,
• event,
• control,