I guess "noun + present participle" is used in an active sense, when something is actually doing something: bone-shattering man-eating life-saving and "noun + past participle" is used in a passive sense, when something has something done to it, or when you are describing the (static) properties of something: star-struck moth-eaten lemon-scented
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Anonymousthere are 4 common kinds of compound modifiers, 1. number + noun, 2. noun + present participle, e.g. a prize-winning film 3. noun + past participle, e.g. a stress-related issue, and 4. adjective + past participle. How do we know when you use noun + past participle versus noun + present participle?If I understand your question, I think you may have