( ( Discuss ( ( the ( important differences ) ) ( between ( ( ( ionic compounds ) and ) ( molecular ( ( elements and ) compounds ) ) ) ) ) ) . )
(ROOT (NP (NP (NNS Discuss)) (NP (NP (DT the) (JJ important) (NNS differences)) (PP (IN between) (NP (NP (JJ ionic) (NNS compounds)) (CC and) (NP (JJ molecular) (NNS elements) (CC and) (NNS compounds))))) (. .)))
Discuss the important differences between ionic compounds and molecular elements and compounds.
(ROOT (S (NP (DT A) (JJ binary) (JJ molecular) (NN compound)) (VP (VBZ is) (VP (VBN made) (PRT (RP up)) (PP (IN of) (NP (CD two) (NNS elements))))) (. .)))