This is the 13020th most frequent Russian word.
любовью
The Russian word "любовью" means "with love" or "by love" (instrumental case of "любовь," meaning "love").
It shows the instrumental case of the word 'любовь' functioning as the means of the action.
Он посмотрел на нее с любовью.
He looked at her with love.
Here it conveys the dedication and affection put into creating something.
Эта картина нарисована с большой любовью.
This painting was created with great love.
In this case, it emphasizes the mutual feelings of love and respect between the individuals.