Using all letters

                                                                            conditions

                                                                             dictions

                                                                            distinction

                                                                           distinctions

                                                                          The other words:

                                                                               codon

                                                                              codons

                                                                             condition

                                                                               condo

                                                                              condos

                                                                              conoid

                                                                              conoids

                                                                               dicot

                                                                              dicots

                                                                              diction

                                                                               didos

                                                                               didst

                                                                               dints

                                                                               disco

                                                                              discoid

                                                                             discoids

                                                                              discos

                                                                               discs

                                                                             distinct

                                                                               ditto

                                                                              dittos

                                                                               dodos

                                                                               idiot

                                                                              idiotic

                                                                              idiots

                                                                              indict

                                                                              indicts

                                                                            indistinct

                                                                               iodin

                                                                               snood

                                                                              snoods

                                                                               stood