This is the 9755th most frequent Japanese word.
薬剤師
Pharmacist.
In this sentence, '薬剤師' (pharmacist) is used straightforwardly as a professional title referring to his occupation.
彼は薬剤師として働いています。
He works as a pharmacist.
Here, '薬剤師' (pharmacist) refers to the person responsible for dispensing medicine to customers in a pharmacy.
薬をもらうために薬剤師と話しました。
I talked with a pharmacist to get medicine.
In this instance, '薬剤師' emphasizes the role of pharmacists in advising on health-related matters, characterizing their expertise.