This is the 75th most frequent Romanian word.
acesta
"This" or "this one" (masculine singular).
Here, 'acesta' is used as a demonstrative pronoun, indicating a specific person.
Acesta este prietenul meu cel mai bun.
This is my best friend.
Here, 'acesta' is used as a demonstrative pronoun referring to the chosen gift.
Alegeți un cadou pentru aniversare, iar acesta trebuie să fie special.
Choose a gift for the birthday, and it must be special.
In this sentence, 'acesta' acts as a pronoun referring back to the previously mentioned 'telefon'.