これ知ってる？or　この言葉知ってる？　はYou know?でいいのですか？
How most natural Are Speaking?

please teach me.

Let me know someone.

which is correct?

Question

これ知ってる？or　この言葉知ってる？　はYou know?でいいのですか？
How most natural Are Speaking?

please teach me.

Let me know someone.

which is correct?

Answer

この言葉知ってる？ -> Do you know this word?
これ知ってる？ -> Are you familiar with this?

You knowだけでは足りません。何か加えなければなりません。