Second is the movement of the first.

First grows into the second.

Second is the name given to the process of travel of the first.

River contains flowing water. Similarly, pool contains stagnant water.

First moves in the second by capillary action.

The words in each pair are antonyms of each other.

Second denotes the purpose for which the first is undertaken.

Chlorophyll imparts green colour to the plant. Similarly, haemoglobin imparts red colour to the blood.

First is produced by the action of second.

One who abstains from meat is called vegetarian and one who abstains from liquor is called a teetotaller.