close, clude=閉じる
conclude / 完全に閉じる→結論を下す
cf. The Catholic church continues to exclude women from the priesthood.
enclose / 中に閉じる→同封する、囲む
cf. I enclose a check for $200 in this ecvelope.
secluded / 離れて閉じる→人里離れた
cf. We drove to a secluded spot in the country.