This is the 5187th most frequent Swedish word.
deniz
The word "deniz" is not Swedish; it is Turkish and means "sea" in English.
Here, 'deniz' acts as a direct noun referring to the 'sea'.
Den blå deniz är väldigt vacker.
The blue sea is very beautiful.
In this sentence, 'deniz' again refers to the 'sea', used to specify the location.
Jag gillar att gå längst stranden vid deniz.
I like walking along the beach by the sea.
'deniz' in this context refers to 'sea' metaphorically, describing the origin of soothing auditory effects.