This is the 5914th most frequent Russian word.
романтические
Romantic.
The word 'романтическим' is in the instrumental case here, modifying 'ужином' to describe the type of dinner, giving the notion of romance.
Мы наслаждаемся романтическим ужином при свечах.
We are enjoying a romantic candlelit dinner.
The word 'романтические' is in the plural nominative case here, modifying 'мечты' to describe the kinds of dreams, implying they involve romance.
Её романтические мечты часто становятся темой её рассказов.
Her romantic dreams often become the theme of her stories.
The word 'романтическая' is in the singular nominative feminine case here, modifying 'музыка' to describe the type of music, indicating it has qualities of romance.