关于 [ guān yú ]: pertaining to; concerning; with regard to; about; a matter of

有关 [ yǒu guān ]: to have sth to do with; to relate to; related to; to concern; concerning

机关 [ jī guān ]: mechanism; gear; machine-operated; office; agency; organ; organization; establishment; institution; body; stratagem; scheme; intrigue; plot; trick; Classifiers: 个

关心 [ guān xīn ]: to be concerned about; to care about

关键 [ guān jiàn ]: crucial point; crux; Classifiers: 个 ; key; crucial; pivotal

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