adverb
Indicates doing something with another person or thing, or being in the same place. Often used with と.
友達と一緒に映画を見た。
I watched a movie together with my friend.
adverb
Describes two or more events occurring simultaneously. Often used with に to mark the time point.
鐘の音と一緒に式が始まった。
The ceremony began at the same time as the bell rang.
adverb
in one lump; in the same category
Used when grouping items or treating them as a single unit, often in contexts like packaging, billing, or classification.
これらの書類を一緒にまとめてください。
Please bundle these documents together.
送料は商品と一緒に請求されます。
The shipping fee will be billed together with the product.