first-aid instant cold pack is a kind of cold pack
first_aid_kit is kit. first_aid_kit is not medical_device. first_aid_kit is first_aid_market_category. applying_cold_pack is health_care. cold_medicine is not first_aid_market_category. first_aid_kit is not kit. first_aid_kit is not first_aid_market_category. applying_cold_pack is not health_care. cold_medicine is first_aid_market_category.