This is the 16425th most frequent Russian word.
романтическое
Romantic.
The word "романтическое" is used as an adjective describing the nature of the film.
Этот фильм был очень романтическим.
This movie was very romantic.
Here, "романтическое" describes "вечере," indicating the type or mood of the evening.
Она мечтала о романтическом вечере со свечами.
She dreamed of a romantic evening with candles.
The word "романтические" is used to describe the nature of their relationships.