This is the 13866th most frequent Swedish word.
äldre
Older; elderly.
In this sentence, 'äldre' is used as an adjective describing the relative age of my brother compared to me.
Min äldre bror bor i Göteborg.
My older brother lives in Gothenburg.
Here, 'äldre' is part of a compound noun 'äldreboende', referring to a facility for elderly people.
Hon arbetar på ett äldreboende.
She works in a retirement home.
In this context, 'äldre' is used as a noun to refer to older people or senior citizens collectively.