| Gardens | Dorn + | thorn + | Gardening | C |
| Perception | dornig + | thorny + | Touch | B |
Most Common Compounds Set 1:
Most Common Compounds Set 2 :
| Intermediate -Advanced: 2841 (noun: thorn, splinter)  He accidentally pricked himself by a thorn on the cactus.  Er wurde versehentlich von einem Dorn an einem Kaktus gestochen.  Anh vô tình bị gai trên cây xương rồng đâm phải. |
như cái gai trước mắt 
a thorn in one’s side, stand or stick out like a sore thumb lể to scarify, extract with a thorn nhể gai to extract a thorn