( ( ( ( ( TUNGSTEN ( CARBIDE Compound ) ) ( of ( ( tungsten and ) carbon ) ) ) , ) ( of ( ( composition varying ) ( between ( ( WC and ) W2C ) ) ) ) ) ; )
(ROOT (NP (NP (NP (NNP TUNGSTEN) (NNP CARBIDE) (NNP Compound)) (PP (IN of) (NP (NN tungsten) (CC and) (NN carbon))) (, ,) (PP (IN of) (NP (NP (NN composition) (VBG varying)) (PP (IN between) (NP (NNP WC) (CC and) (NNP W2C)))))) (: ;)))
TUNGSTEN CARBIDE Compound of tungsten and carbon, of composition varying between WC and W2C;
(ROOT (S (NP (NP (JJ Binary) (NNS compounds)) (PP (IN of) (NP (NP (NN carbon)) (PP (IN with) (NP (ADJP (RBR less) (JJ electronegative)) (NNS elements)))))) (VP (VBP are) (VP (VBN called) (NP (NNS carbides)))) (. .)))