Decline and Decadence
( ( Decline and ) Decadence )
(ROOT (S (VP (VB Decline) (CC and) (VB Decadence))))
Decline and decadence have a direct correlation. 
( ( ( Decline and ) decadence ) ( ( have ( a ( direct correlation ) ) ) . ) )
(ROOT (S (NP (NN Decline) (CC and) (NN decadence)) (VP (VBP have) (NP (DT a) (JJ direct) (NN correlation))) (. .)))