Using all letters

                                                                             gavotting

                                                                            innovating

                                                                           invagination

                                                                            navigation

                                                                          The other words:

                                                                               avian

                                                                             aviating

                                                                             aviation

                                                                               avion

                                                                               gavot

                                                                               givin

                                                                              giving

                                                                            innovation

                                                                            invitation

                                                                             inviting

                                                                            navigating

                                                                             nonvoting

                                                                              ovation

                                                                            titivating

                                                                              vagina

                                                                              vatting

                                                                              vining

                                                                             vitiating

                                                                             vitiation

                                                                              vivant

                                                                              voting