万端　ｖｓ　完了 in this context


I was listening to a song the other day when I saw this. The lyrics in
question:

> [帰宅]{きたく}[完了]{かんりょう}。ダウンロード[完了]{かんりょう}。[配信]{はいしん}スタート。[準備]{じゅんび}[万端]{ばんたん}。

According to Jisho 万端 means

> all； everything

To me, it makes it hard to understand why they say 準備万端 when faced with this
definition. If they were to use 完了 instead would it mean the same thing?




準備万端 is a kind of set phrase which uses four kanji characters in a compound.
They are called [yojijukugo](https://en.wikipedia.org/wiki/Yojijukugo) (四字熟語).
They are commonly used as idiomatic phrases in Japanese. You could replace it
with 準備完了 but it wouldn't have quite the same impact, even though the meaning
isn't that different.




準備万端 is a kind of set phrase which uses four kanji characters in a compound.
They are called [yojijukugo](https://en.wikipedia.org/wiki/Yojijukugo) (四字熟語).
They are commonly used as idiomatic phrases in Japanese. You could replace it
with 準備完了 but it wouldn't have quite the same impact, even though the meaning
isn't that different.

