The term “rapture” is usually used, at least here in America, to mean a time that God will supposedly take all the true Christians up to heaven either just before or in the middle of a big tribulation the world will go through. Often they believe this tribulation will be seven years long and will be followed by a thousand year reign of Christ on earth, ruling Jews from Jerusalem, before finally the Second Coming and the new eternal order arrives. Some of these ideas are alien to Catholicism while others are options some Fathers seem to have believed in but have become unpopular in the Catholic Church.
Technically you could say we Catholics believe in the rapture, but believe it will happen at about the same time as the Second Coming and General Resurrection, but stating it that way could lead to unnecessary confusion since this is not what the word usually means.