Using all letters

                                                                           antiaircraft

                                                                              frantic

                                                                              infarct

                                                                              infract

                                                                          The other words:

                                                                              affair

                                                                              affiant

                                                                              africa

                                                                              african

                                                                               afrit

                                                                             aircraft

                                                                             artifact

                                                                              caftan

                                                                              caitiff

                                                                               craft

                                                                               facia

                                                                               faint

                                                                              fanatic

                                                                              farina

                                                                              finnan

                                                                               franc

                                                                              franca

                                                                               friar

                                                                              infant

                                                                               infra

                                                                              raffia

                                                                             riffraff

                                                                              tariff

                                                                              tiffin

                                                                              traffic