When using two consecutive adjectives to describe the same noun, you must place a comma between the two adjectives.
Bob has a big pumpkin .
Bob has a beautiful pumpkin.
Bob has a big, beautiful pumpkin.
Tuesday was a dark day.
Tuesday was a rainy day.
Tuesday was a dark, rainy day.
Instead of a comma, you can also use the word and between the two adjectives.
Bob has a big and beautiful pumpkin.
Tuesday was a dark and rainy day.
If you can use and between the two adjectives, then you need a comma between them.
Sometimes the word and does not work between two adjectives.
I live in a red brick house.
In this sentence, the first adjective – red – actually modifies the second adjective – brick.
We cannot say I live in a red and brick house. Therefore, we do not put a comma between red and brick.
▶Now you try it. Decide if this sentence needs a comma between the two adjectives. I enjoyed a restful relaxing vacation. Did you put in the comma? Good for you!