치약toothpaste 감기약cold medicine 약medicine; medication; pill; drug 약국pharmacy 약사pharmacist 두통약headache medicine 마약illicit drug 변비약laxative; constipation medicine 설사약diarrhea remedy 소독약disinfectant

효과effect; efficacy 효과적being effective; being effectual 효과적effective; effectual 효율적being efficient; being effective 효율적efficient; effective 비효율적being inefficient 비효율적inefficient 특효special efficacy 특효약miracle cure; wonder drug 효과음sound effect