This is the 583rd most frequent Romanian word.
a
The Romanian word "a" is the infinitive particle used before verbs.
Here, 'a' is an auxiliary verb used for forming past tenses.
A venit la timp.
He/She arrived on time.
Here, 'a' is used as part of the ordinal indicator.
Am cumpărat a doua carte.
I bought the second book.
Here, 'a' acts as a preposition denoting purpose/intention.