Isha (医者) means "doctor." It refers to a medical professional who treats illness and injury. While "isha" is the noun for doctor, when addressing a doctor directly, it is polite to use "sensei" (先生) as an honorific, showing respect for their profession. Example: 彼は医者になりたいです。(Kare wa isha ni naritai desu.) = He wants to become a doctor.

病気や怪我を治療する専門家を指します。先生と呼ぶのが丁寧です。例：彼は医者になりたいです。