LAST QUESTION!!!! WILL GIVE BRAINLIEST AND RATE AND VOTE!!!!!!!!! AT LEAST TAKE A LOOOKKKK!!!!!! PLS BE 1000% SURE

Read this sentence from "The Masque of the Red Death."

"The dreams are stiff-frozen as they stand."

What kind of word is the hyphenated word?
A) a compound noun
B) a compound adjective