Short version: a family tree records who is related to whom. A genogram records that plus how the family actually functions — relationship quality, health history, and life events, in a standardized notation other professionals can read. If a therapist, professor, or nurse asked for a "genogram," a family tree will not pass.
The same family, both ways
Here is one fictional blended family drawn twice. The family tree answers "who"; every extra mark on the genogram answers "what's going on."
The genogram shows things the tree physically cannot: Marcus and Denise are divorced (two slashes), Tyler and Beth are twins (joined drop lines), Nora is a half-sibling from the remarriage, Tyler is in conflict with his stepfather, and the ex-spouses are distant. Five clinically relevant facts, zero extra words.
Feature by feature
| Family tree | Genogram |
|---|
| Purpose | Genealogy — ancestry, lineage, heritage | Assessment — patterns, risk, family process |
| Symbols | Names in boxes; any style goes | Standardized: squares/circles, slashes, drop lines (full reference) |
| Relationship status | Usually just "married to" | Marriage, divorce, separation, cohabitation — each visually distinct |
| Emotional quality | Absent | Close, fused, distant, conflict, cutoff overlay lines |
| Health data | Rare | Deaths with causes, conditions, hereditary patterns |
| Typical users | Families, genealogists, kids' school projects | Therapists, social workers, nurses, physicians, students in those fields |
| Depth | As many generations as you can research | Three to four generations, analyzed closely |
Which one do you need?
- Tracing ancestry, building a keepsake, school heritage project — a family tree is the right tool.
- Therapy intake, MSW or nursing assignment, family health history, custody or placement assessment — you need a genogram, in standard notation, with a legend.
- Unsure? Genograms are a superset: draw one and simply leave the emotional layer off, and you still have a structurally correct family diagram.
When you're ready, the free genogram maker draws all of the notation above — start from a template or a blank canvas.