а vs и

a vs i — and/but contrast vs and/addition

What it really means

И joins additions and sequences: tea and coffee. А can mean and, but often contrasts topics, changes focus, or means while; it is not simply a weaker но.

Examples in natural speech

Чай и кофе.
Tea and coffee.
Я читаю и пишу.
I read and write.
Я дома, а он на работе.
I am home, while he is at work.
А ты как?
And how about you?
Она пришла и села.
She came and sat down.

Common mistakes

Do not replace contrastive а with simple additive и when the two subjects are contrasted.

Memory tip

И adds; а turns to another side or topic.

Frequently asked questions

Can а mean and?

Yes, with contrast or topic shift.

What joins a list?

И.

Is а always but?

No.

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