| A | B |
| Bigamy | going through with a marriage while already being married to another person |
| Civil Union | Same-sex couples recognized in certain states without the legal rights guaranteed by the federal government |
| Cohabitation | A heterosexual coupling living together without being married |
| Cohabitation Effect | an increased chance of getting divorced when a couple cohabit before marriage |
| divorce | the legal dissolution of a marriage |
| domestic partnership | Same-sex or cohabitating couples recognized in certain states, but without the legal rights guaranteed by the federal government |
| nonresidential parent | a parent that does not live in the household as the child |
| polygamy | marriage between one person & more than one spouse |
| postmodern family | household that has a mother and father and more than one child |
| psychological parent | a person that a child refers to as a parent but has no biological ties to that child |
| blended family | The family of a person who remarries after divorce or death of the spouse, including all children |
| serial monogamy | engaging in a succession of monogamous sexual relationships |
| single parent family | A family in which one parent is responsible for the children in a household |
| nuclear family | a couple and their dependent children |
| trial marriage | cohabitation to assess whether parents are sufficiently compatible for marriage |
| ageism | discrimination in the workplace or other areas because of age |
| assisted suicide | the situation in which one person supplies the means for another to commit suicide in order to prevent suffering |
| boomerang kids | children return home temporarily |
| empty nest | no children living at home |
| 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 |
| passive euthanasia | withholding treatment that would prolong life because the current quality of life is minimal |
| renested family | a home to which adult children have returned to live temporarily |
| sandwich generation | generation of people who have to care for their children and their aging parents |