( Period ( - ( ( ( The period ) ( is ( ( the time ) ( ( required ( for ( one wave ) ) ) ( to ( move ( one wavelength ) ) ) ) ) ) ) . ) ) )
(ROOT (FRAG (NP (NN Period)) (: -) (S (NP (DT The) (NN period)) (VP (VBZ is) (NP (NP (DT the) (NN time)) (VP (VBN required) (PP (IN for) (NP (CD one) (NN wave))) (S (VP (TO to) (VP (VB move) (NP (CD one) (NN wavelength))))))))) (. .)))
Period- The period is the time required for one wave to move one wavelength.
(ROOT (S (NP (NN Period)) (VP (VBZ is) (NP (NP (DT the) (NN time) (NN interval)) (VP (VBN required) (PP (IN for) (NP (CD one) (JJ complete) (NN wave) (S (VP (TO to) (VP (VB pass) (NP (NP (DT a) (NN point)) (VP (VBN called))))))))))) (. .)))