( ( ( ( ( ( ( The ( terms weight ) ) , ) ( force ( of gravity ) ) ) , ) and ) ( gravitational force ) ) ( ( ( are sometimes ) ( used synonymously ) ) . ) )
(ROOT (S (NP (NP (NP (DT The) (NNS terms) (NN weight)) (, ,) (NP (NP (NN force)) (PP (IN of) (NP (NN gravity)))) (, ,)) (CC and) (NP (JJ gravitational) (NN force))) (VP (VBP are) (ADVP (RB sometimes)) (VP (VBN used) (ADVP (RB synonymously)))) (. .)))
The terms weight , force of gravity , and gravitational force are sometimes used synonymously.
(ROOT (S (NP (NNP Weight)) (VP (VBZ is) (NP (NP (DT the) (NN force)) (PP (IN of) (NP (NN gravity))))) (. .)))