This is the 1014th most frequent Japanese word.
ご存じ
"ご存じ" means "knowing" or "being aware," used to show respect for someone else's knowledge.
The word 'ご存じ' indicates 'to know' and is used in polite form inquiring about someone's knowledge of something.
彼がこのイベントに参加することをご存じですか。
Do you know that he is participating in this event?
The term 'ご存じ' is again used to politely ask whether someone is familiar with or knows certain information, in this case, a cooking method.
この料理の作り方について、ご存じですか。
Do you know how to make this dish?
Here 'ご存じ' is used negatively, paired with 'ありません', to express unawareness or lack of knowledge in a polite form.