This is the 2868th most frequent Russian word.
белорусы
Belarusians (people of Belarus).
In this sentence, 'белорусы' refers to the people of Belarus as a group, highlighting a characteristic attributed to them as a nationality.
Белорусы известны своим гостеприимством.
Belarusians are known for their hospitality.
Here, 'белорусов' refers to several individuals from Belarus, used in the genitive plural form to indicate a subgroup of people.
Группа белорусов путешествовала по Европе.
A group of Belarusians was traveling across Europe.
The term 'белорусы' in this context specifically identifies the neighbors by their ethnicity or origin, serving as a descriptive noun.