Festival of Lights. But that's not a Jewish name and we don't use it.
The same reason you would give out other holiday cards. It is done to celebrate the joyous holiday and remember the miracle that occurred so many years ago. It is a way to say hello to friends and family and remind them how lucky we are to have one another.
You say "Hag Hanukkah sameach" in response.
Happy Hanukkah = Hau'oli Hanuka
Hanukkah is a holiday, not a language. You cannot say "Merry Christmas in Hanukkah. That's like asking: "How do you say Merry Christmas in Easter" I think he means how do you say merry Christmas in Hebrew
Hanukkah is a holiday. Not a language. During Hanukkah you would say "hello" the same as on a regular day. You can also greet people by saying "Happy Hanukkah".
et cetera is another way to say and so on
ask me another one
"Tanoshii Hanukkah." It's a literal phrase and is likely to be gramatically incorrect.
The answer is "Encaenia" or "Encenia."
There is no special way of acting during Hanukkah, except maybe to be happy, and grateful to God for the miracles which Hanukkah commemorates.
You shouldn't. Hanukkah and Christmas are no necessarily on the same day, so it would be inappropriate to wish someone a happy Hanukkah on December 25, if that day isn't during of Hanukkah. A better idea would be to look on a calendar to see when Hanukkah falls, then then wish your Jewish friends a Happy Hanukkah on Hanukkah.
Another way to say 'events' is 'functions'