This is the 3179th most frequent Russian word.
морозов
"Морозов" is a Russian surname derived from "мороз," meaning "frost."
Here, "Морозов" is used as a proper noun, specifically a surname in Russian, denoting an individual.
Морозов организовал встречу в парке.
Morozov organized a meeting in the park.
In this sentence, "морозов" indicates the genitive plural form of "мороз," used to describe the cause of an event or condition in the weather.
Из-за морозов весь пруд замёрз.
Because of the frosts, the entire pond froze over.
In this sentence, "морозы" is the plural form of "мороз," which refers to the phenomenon of freezing weather conditions without specifying a person.