So, are celery and rhubarb related? Only in the way that you and your third cousin twice removed are related—technically, but you never call each other. They share a distant order, but different families, tastes, and personalities. Celery is the introverted office worker; rhubarb is the punk rocker who shows up to pie parties.
Next time you see them together at the farmers' market, give them a little nod. They’re vegetable-coded for the same aesthetic, but ultimately on separate botanical journeys. And if anyone tells you otherwise, just hand them a rhubarb stalk raw and watch them cry. That’s science.