Turn this distinction into automatic recall
Falando teaches Brazilian Portuguese through grammar, vocabulary, audio, examples, and spaced review, so confusing pairs stop feeling like guesses.
Quick answer
Ano measures years; aniversário is the date that returns each year.
A reliable test is to identify the job of the word before translating from English.
What each word does
ano
year
Use ano for a twelve-month period or someone’s age in years.
aniversário
birthday or anniversary
Use aniversário for the yearly date that marks a birth or another event.
How to choose
- ano: Choose ano if the sentence points to a twelve-month period or someone’s age in years.
- aniversário: Choose aniversário if the sentence points to the yearly date that marks a birth or another event.
Examples
Ela tem oito anos.
She is eight years old.
Meu aniversário é em maio.
My birthday is in May.
Common trap
Aniversário does not mean age. Ask Quantos anos você tem?, not Quanto aniversário você tem?
Practice it in context
Pick one sentence from your real life and write it twice: once with ano, then once with aniversário. If both versions feel possible, name the meaning shift.
Turn this distinction into automatic recall
Falando teaches Brazilian Portuguese through grammar, vocabulary, audio, examples, and spaced review, so confusing pairs stop feeling like guesses.