This is the 356th most frequent Romanian word.
alta
The Romanian word "alta" means "other" or "another" (feminine singular form).
Here, 'altă' is used as an adjective meaning 'another' modifying the noun 'carte' (book).
Am găsit o altă carte interesantă.
I found another interesting book.
In this case, 'alta' functions as a pronoun meaning 'another one,' referring implicitly to something previously mentioned.
Aceasta este țeava stricată, iar alta este deja reparată.
This is the damaged pipe, and another one is already fixed.
Here, 'alta' is again a pronoun meaning 'another one,' used in contrast to a previously mentioned object.