An eggplant stew is different from an eggplant dip
The idea
The stew keeps vegetables within a sauce-based preparation, while a dip uses cooked eggplant as a worked base. They may share a main ingredient without serving the same role on the table. One can be a substantial cooked dish; the other is useful for sharing with accompaniments.
A practical next step
Compare the preparation terms rather than using the vegetable name as the only guide.