This is the 17506th most frequent Russian word.
траве
"Траве" is the dative or prepositional case of "трава," meaning "grass" in English.
The word "траве" is used as a noun in the prepositional case to indicate the location.
Я сижу на траве у озера.
I am sitting on the grass by the lake.
The word "траве" is used as a noun in the prepositional case referring to where the flowers are placed.
Цветы на траве ярко выделяются.
The flowers on the grass stand out brightly.
The word "траве" is again in the prepositional case, describing the grass at a specific time, morning.