- 关(guān): to close; to shut; to turn off; mountain pass; to concern; to involve
- 关系(guān xì): relationship (network); relation; to concern; to affect; to have to do with; guanxi; CL: 個|个(gè)
- 关心(guān xīn): to care for something; caring; concerned
- 关于(guān yú): pertaining to; concerning; regarding; with regards to; about; a matter of
- 关键(guān jiàn): crucial point; crux; CL: 個|个(gè); key; crucial; pivotal
*CL: Classifier/Measure Word