関係【かんけい】
relation, relationship, connection, participation, involvement, concern, influence, effect, sexual relations, sexual relationship, related to, connected to
係【かかり】
charge, duty, person in charge, official, clerk, connection, linking
無関係【むかんけい】
unrelated
係員【かかりいん】
person in charge, official, attendant
係争【けいそう】
dispute, contention, conflict, controversy
連係【れんけい】
connection, linking, linkage, link, liaison, contact, coordination