This is the 761st most frequent Serbian word.
мораве
"Мораве" refers to "Moravas," the Morava rivers in Serbia.
Here, 'Мораве' refers to the rivers named 'Morava' and is used as a plural proper noun to denote these geographical entities.
Мораве су једна од највећих река у Србији.
Morava is one of the largest rivers in Serbia.
In this sentence, 'Мораве' is used to denote the name of a river specifically in singular, culturally using a plural form out of respect or stylistic choice.
На обалама Мораве налазе се плодна поља.
Fertile fields are located on the banks of the Morava.
Here, 'Мораве' refers to the region or area surrounding the Morava river, capitalized to denote the cultural or geographical region it represents.