If sky is called sea,sea is called water,water is called air,air is called cloud and cloud is called river,then what do we drink when thirsty?

In a certain code language,$617$ means 'sweet and hot',$735$ means 'coffee is sweet' and $263$ means 'tea is hot'. Which of the following would mean 'coffee is hot'?

In a certain code,$REFRIGERATOR$ is coded as $ROTAREGIRFER$. Which word would be coded as $NOITINUMMA$?

If in a certain language $CHARCOAL$ is coded as $45164913$ and $MORALE$ is coded as $296137$,how is $COACH$ coded in that language?

In a certain coding system,$RBM STD BRO PUS$ means '$the cat is beautiful$'. $TNH PUS DIM STD$ means '$the dog is brown$'. $PUS DIM BRO PUS CUS$ means '$the dog has the cat$'. What is the code for '$has$'?

The number $184632$ is to be codified in the following code:

Digit	$7, 2, 1, 5, 3, 9, 8, 6, 4$
Letter	$W, L, M, S, I, N, D, J, B$