( ( ( The ( delicate ( , ( white crystals ) ) ) ) ( of ( ice ( that ( form ( in ( this manner ) ) ) ) ) ) ) ( ( are ( called ( either ( ( white frost ) ( , ( hoarfrost ( , ( or ( simply frost ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ delicate) (, ,) (JJ white) (NNS crystals)) (PP (IN of) (NP (NP (NN ice)) (SBAR (WHNP (WDT that)) (S (VP (VBP form) (PP (IN in) (NP (DT this) (NN manner))))))))) (VP (VBP are) (VP (VBN called) (UCP (RB either) (ADJP (JJ white) (JJ frost)) (, ,) (ADJP (JJ hoarfrost)) (, ,) (CC or) (NP (RB simply) (NNS frost))))) (. .)))
The delicate, white crystals of ice that form in this manner are called either white frost, hoarfrost, or simply frost.
(ROOT (S (NP (NP (DT The) (NN ice) (NNS crystals)) (SBAR (WHNP (WDT that)) (S (VP (VBP form) (PP (IN on) (NP (DT the) (NN ground))))))) (VP (VBP are) (VP (VBN called) (S (ADJP (JJ frost))))) (. .)))