Components

“LED-TH_2P-P2.54_L4.9-W1.9_BLUE”, 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 “LED-TH_2P-P2.54_L4.9-W1.9_BLUE” on what it describes rather than on names. This takes a few seconds.