| A | B |
| Cohabitating Families | A heterosexual coupling living together without being married |
| Domestic partnership | Same-sex or cohabitating couples recognized in certain states, but without the legal rights guaranteed by the federal government |
| Bigamy | entering into a marriage with one person while still married to another |
| Polygamy | Marriage between one person and more than one spouse |
| Postmodern family | A term meant to include all family variations existing today |
| Psychological parent | A person serving as a parent who is not biologically related to the child |
| Ageism | Discrimination in the workplace or other areas because of age |
| Single-Parent Families | A family in which one parent is responsible for the children in a household |
| Assisted Suicide | The situation in which one person supplies the means for another to commit suicide in order to prevent suffering |
| Boomerang Kids | Adult children who return to live temporarily with parents |
| Empty nest | A home after the last child has left |
| Euthanasia | Taking another person's life to prevent suffering |
| Fixed Income | Income from a pension, annuity, or other source that is frozen at a certain level |
| Sandwich Generation | The generation that may be responsible for care for aging parents and young children at the same time |
| Spacious nest | The transition to more physical room in the empty next home and more psychological space for the marital relationship |