One or more adjectives in a sequence that modify the same noun are known as what?

One or more adjectives in a sequence that modify the same noun are known as "coordinate adjectives." Coordinate adjectives are adjectives that independently modify a noun and can be joined by a conjunction or separated by a comma. For instance, in the phrase "the big, red ball," both "big" and "red" are coordinate adjectives describing the noun "ball."

To determine whether adjectives are coordinate, you can use the “and” test: if you can put “and” between the adjectives without changing the meaning, they are coordinate. Also, they can typically be rearranged in order without altering the sentence's meaning. If they cannot, they are likely not coordinate and are instead cumulative adjectives, which build upon each other to modify the noun in a specific order.