A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

Type to find tags:
The Lord of The Rings
a Lego theme released in 2013, set in a fantasy land called "Chima" where various animal tribes are at war with one another, battling to collect a magic substance called "CHI".
In this context quality refers to product strength and durability, color consistency, etc.