A taxonomy of 15 semantic relations that Cosmo (Amazon's Rufus-Powering Algorithm) is claimed to check a listing against when judging buyer-intent alignment — covering facets like what the product is, its function ("used for function"), the occasion it serves ("used for event"), who it's for ("used for audience"), and where it's used ("used in location"), among others.
Practical split: a title should hit roughly 5 of the 15 relations, prioritized by RICE Prioritization Framework (Reach, Impact, Confidence, Effort); the full listing — title, bullets, description, and backend search terms — should cover all 15 somewhere. A "Cosmo doctor check"-style audit (scan title/bullets/description/backend against the 15 relations and flag gaps) is the diagnostic pattern for finding missing relations — e.g. a beard-oil listing missing "used for event," "used for audience," and "used in location."
Also feeds Rufus (Amazon's AI Shopping Assistant)'s answer generation, since Rufus is described as sitting on top of Cosmo's relevance graph.