The group words for thistle include: thistle, thistle mound, mountain thistle, thistle gate, horse thistle, prickly thistle, thistle smoke tree, ghostly thistle, quercus thistle, liao thistle, bin thistle, big thistle, small thistle and other words.

Expansion: artichoke, pronounced ji, tone is the fourth tone, radical is 艹, the basic interpretation of artichoke is as follows: 1. a perennial herb with thorny stems, pinnate leaves, purplish-red flowers, and ellipsoid achenes, the whole herb can be used as medicine, also called daji; 2. an ancient place name, southwest of present-day Beijing, once the capital of the state of Yan in the Zhou Dynasty;

3. Jixian County, a place name, in Tianjin; 4. A family name. Because the character is difficult to remember, people have also created related word puzzles for it: "蓟 "为谜底的谜语--鱼仔草下游,小刀随鱼走(打一字).