Using all letters

                                                                           invitational

                                                                             lavation

                                                                           nonviolation

                                                                             violation

                                                                            volitional

                                                                          The other words:

                                                                               anvil

                                                                               avail

                                                                               avian

                                                                             aviation

                                                                               avion

                                                                            innovation

                                                                            invitation

                                                                              latvia

                                                                              latvian

                                                                             lavalava

                                                                               naval

                                                                              olivia

                                                                              ovation

                                                                               ovolo

                                                                              valiant

                                                                               valva

                                                                              valval

                                                                              vanilla

                                                                             vanillin

                                                                               villa

                                                                              villain

                                                                               villi

                                                                               vinal

                                                                               viola

                                                                              violin

                                                                               vital

                                                                             vitiation

                                                                              vivant

                                                                               voila

                                                                             volition

                                                                               volta