Here's why:
* Nouns name people, places, things, or ideas. Examples: *table, dog, happiness, London*.
* Adjectives describe nouns. Examples: *red, big, happy, English*.
In a sentence, "supported" would modify a noun, providing information about it. For example:
* "The supported beam held the weight of the roof." (Supported describes the beam)
* "The government provided supported housing for the homeless." (Supported describes the housing)
Let me know if you have any other words you'd like to classify!