This is the 21st most frequent Romanian word.
acest
"Acest" means "this" in English.
The word 'acest' is used as a demonstrative adjective to indicate a specific item, 'cățel', within the context.
Acest cățel este foarte prietenos.
This puppy is very friendly.
The word 'acest' points out a specific phone, emphasizing its proximity in temporal context with the purchase.
Am cumpărat acest telefon ieri.
I bought this phone yesterday.
Here, 'acest' is used to specify one particular season as the subject.