The difference between Triad and Triplet

Triad as a noun:

A grouping of three.

Triad as a noun (music):

A chord consisting of a root tone, the tone two degrees higher, and the tone four degrees higher in a given scale.

Triad as a noun (electronics):

on a CRT display, a group of three neighbouring phosphor dots, coloured green, red, and blue.

Triad as a noun:

A branch of a Chinese underground criminal society, mostly based in Hong Kong.

Triplet as a noun:

A group of three.

Triplet as a noun:

One of a group of three.

Triplet as a noun:

One of a group of three siblings born at the same time to the same mother.

Triplet as a noun (music):

A group of three notes played or written where two notes would ordinarily be; a form of tuplet.

Triplet as a noun (physics):

A triquark.