This is the 16855th most frequent Russian word.
собственная
"Own" or "personal."
In this sentence, "собственная" functions as a possessive adjective meaning "own," emphasizing individual ownership or perspective.
У каждого человека есть собственная точка зрения.
Every person has their own point of view.
Here, "собственная" describes the noun "дом," highlighting that the house belongs solely to the subject (he) as his personal property.
Он построил собственный дом на окраине города.
He built his own house on the outskirts of the city.
"Собственные" specifies that the photographs are authored or owned personally by the subject (she), implying exclusivity.