( Flammability ( ( is ( ( ( ( the ability ) ( of ( a ( substance ( to ( ( burn or ) ignite ) ) ) ) ) ) , ) ( causing ( ( fire or ) combustion ) ) ) ) . ) )
(ROOT (S (NP (NNP Flammability)) (VP (VBZ is) (NP (NP (DT the) (NN ability)) (PP (IN of) (NP (DT a) (NN substance) (S (VP (TO to) (VP (VB burn) (CC or) (VB ignite)))))) (, ,) (VP (VBG causing) (NP (NN fire) (CC or) (NN combustion))))) (. .)))
Flammability is the ability of a substance to burn or ignite, causing fire or combustion.
(ROOT (S (NP (DT The) (NN term)) (ADVP (RB flammability)) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB describe) (NP (NP (DT the) (NN ability)) (PP (IN of) (NP (NN matter)))) (S (VP (TO to) (VP (VB burn))))))))) (. .)))