This is the 5709th most frequent Japanese word.
たわわ
"たわわ" means "lush," "abundant," or "laden," often used to describe something hanging or heavily laden, such as ripe fruit on branches.
In this sentence, "たわわ" is used to describe the state of the fruit tree bearing fruit abundantly and drooping due to their weight.
果物の木がたわわに実っている。
The fruit tree is laden with ripe fruits.
Here, "たわわ" is metaphorically used to depict the abundance and vivacity of the girl's smile.
少女の笑顔がたわわに咲く。
The girl's smile blossoms abundantly.
The term "たわわ" is utilized to convey the abundant and vivid blooming of flowers, creating a lively image.