yes
Yes. The Raiders moved from Oakland to Los Angeles in 1982. After 13 years, they returned to Oakland in 1995.
As in L.A. Raiders? Just the same: Raiders de Los Angeles. Its translation would be corsarios or piratas but such terms are barely used, if at all.
No
No city has ever won both NFL and NBA titles in the same year. Even though it did get close several times having teams from the same city in the NFL and NBA winning championships in consecutive season (like the 1947 Philadelphia Warriors - 1948 Philadelphia Eagles, 1982 Los Angeles Lakers - 1983 Los Angeles Raiders, etc.).
Yup, the '77, '78, and '79 Raiders.
No. Both teams are in the same conference. They have played three times in conference playoff games.
Same division, same state
yes
Yes, since they play in different conferences it would be possible for both to make the Super Bowl in the same season.
They cannot play in the Superbowl as they play in the same conference - the AFC - and in the same division - the AFC East. They have played three times in the playoffs and the Patriots have won two of those three meetings.
okland raiders