Quantifiers for pairs (entrambi, tutti e due)

When talking about a pair, like siblings or twins, there are two common ways to say "both" in Italian: entrambi and tutti e due.

Entrambi (Both)

Entrambi means "both." It changes its ending to match gender: entrambi for masculine nouns and entrambe for feminine nouns.

When followed by a noun, always include the definite article (i, gli, le) between the quantifier and the noun.

Can you manage to distinguish both girls?
Riesci a distinguere entrambe le ragazze?

Tutti e due (Both)

An equally common alternative is tutti e due (literally, "all and two"). It works exactly the same way, changing for gender (tutti e due for masculine, tutte e due for feminine) and requiring the definite article before the noun.

Both brothers resemble each other a lot.
Tutti e due i fratelli si assomigliano molto.
Both sisters are physically identical.
Tutte e due le sorelle sono fisicamente identiche.

Twins and Similarities

You can use either quantifier when describing physical resemblances or trying to tell inseparable siblings apart.

I always confuse both sisters because they are identical.
Confondo sempre tutte e due le sorelle perché sono identiche.
I can distinguish both twins because they are not identical.
So distinguere entrambi i gemelli perché non sono identici.