like: die Post → →
die Postkarte ☊ 
bưu thiếp ☊ 
☊ die Post ☊ bưu điện ☊ ☊ die Postleitzahl ☊ số bưu điện ☊ ☊ Was wollen wir denn auf die Postkarte an deine Eltern schreiben? ☊ Chúng ta muốn viết gì trên bưu thiếp cho bố mẹ anh? ☊ (Lektion 55, Nr. 780) 'Has the mail come yet?' 'I'll look and see.' ☊ look ☊
I sat down to open the mail. ☊ mail ☊
to catch/miss the post ☊ post ☊
He works for the Post Office. ☊ post office ☊
'Has the mail come yet?' 'I'll just go and see.' ☊ see ☊
The Post Office has issued a commemorative stamp to mark the event. ☊ stamp ☊