Everything is a celebration.
( Everything ( ( is ( a celebration ) ) . ) )
(ROOT (S (NP (NNP Everything)) (VP (VBZ is) (NP (DT a) (NN celebration))) (. .)))
All of the things are celebrations.
( ( All ( of ( the things ) ) ) ( ( are celebrations ) . ) )
(ROOT (S (NP (NP (DT All)) (PP (IN of) (NP (DT the) (NNS things)))) (VP (VBP are) (NP (NNS celebrations))) (. .)))