Chinese words with 门 character meaning (HSK)
门
MEN2
gateway, doorway, opening, valve, switch, way2do smth, knack, family, house, relig. sect, school of thought, class; category, phylum /division (tax.), CL4 large guns; lessons, subj’s, branches of techn’gy
部门
BU4, MEN2
department, branch, section, division
窍门
QIAO4, MEN2
a trick, an ingenious method, know-how, the knack (of doing sth)