Components

“UFBGA-12_2.11x1.61mm_Layout4x3_P0.5mm”, by meaning

A component is a schematic symbol with, where the catalog has them, its footprint and 3D package model — linked by KiCad's own references and cross-checked pin by pin.

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Matching “UFBGA-12_2.11x1.61mm_Layout4x3_P0.5mm” on what it describes rather than on names. This takes a few seconds.