簡単めの語

a state of complete confusion and lack of order
economic/political/domestic chaos
Heavy snow has caused total chaos on the roads.
The house was in chaos after the party.
The country was thrown/plunged into chaos by the President’s death.　(Oxford Advanced Learner's)
chaos [kéiɑs] (5) 「全くの混乱と無秩序な状態」

(Oxford Learner's Thesaurus)
confusion [kənfjúːʒən] (5) 「多くのことが同時に起こり人々がどう対処したらいいかわからない状態」

(Oxford Learner's Thesaurus)

chaos は、組織や状態が全く秩序を欠いていることを一般的に述べる語、confusion は、主に突然どうしたらいいか分からなくなった人々について使う。

Disorder refers to civil unrest or to any scene in which there is confusion or fighting: The police went to the scene of the disorder.　(Random House)

disorder [disɔ́ːrdər] (5) 「人々の不安状態や混乱や争いが起きている状況を指す」

Excitement implies a highly emotional state caused by either agreeable or distressing circumstances: excitement over a proposed trip, unexpected good news, a fire.　(Random House)

excitement [iksáitmənt] (3) 「好ましいまたは悲惨な状況によりひどく感情的になっている状態」

1 [uncountable, singular] unnecessary excitement, worry or activity
He does what he's told without any fuss.
All that fuss over a few pounds!
It's a very ordinary movie—I don't know what all the fuss is about (= why other people think it is so good).
It was all a fuss about nothing.
We'd like a quiet wedding without any fuss.　(Oxford Advanced Learner's)

fuss [fʌ́s] (6) 「不要な興奮、心配、または活動」

8 [countable, usually singular] a loud, angry argument, especially one that happens in public and is embarrassing
She had made a scene in the middle of the party.
‘Please leave,’ he said. ‘I don't want a scene.’　(Oxford Advanced Learner's)

scene [síːn] (1) 「特に公共の場で起き、恥ずかしい、大声で怒った口論」

1 [singular] excitement, anger or shock that is felt by a number of people
Her resignation caused quite a stir.
The discovery caused something of a stir among physicists.
There was quite a stir about the book.　(Oxford Advanced Learner's)

stir [stə́ːr] (4) 「多くの人々によって感じられる興奮・怒り・ショック」

3 storm (of something) a situation in which a lot of people suddenly express very strong feelings about something
a storm of protest
A political storm is brewing over the Prime Minister's comments.　(Oxford Advanced Learner's)

storm [stɔ́ːrm] (2) 「人々が突然何かについて強い感情を表す状態」

騒ぎ 1