In your own words, explain the proper use of the comma to separate coordinate adjectives. provide a sample sentence to illustrate the rule.

Coordinate adjectives are those adjectives that modify a noun independently from each other, holding the same weight. These adjectives need to be separated with a comma (or the word and.)

For example:

We had to walk down a long, narrow street.

Both long and narrow are independent and modify the word street, so they are coordinate adjectives and, as such, need to be separated by a comma.