(1) sand dune (2) alcohol
(3) collar
(4) gum, paste ☊
cồn ☊ alcoholism, alcohol addiction; addicted to alcohol ☊ nghiện rượu ☊ fermented sticky rice, alcohol made of sticky rice ☊ rượu nếp ☊ bar, liquor store, place where alcohol is sold ☊ tiệm rượu ☊ spirit lamp, alcohol lamp ☊ đèn cồn ☊