This is the 615th most frequent Dutch word.
groeien
"To grow."
Here, 'groeien' is used to describe the physical growth of plants.
De bloemen groeien snel in de lente.
The flowers grow quickly in the spring.
In this case, 'groeien' is used as part of a phrasal verb 'groeien op,' which means 'to grow up' referring to maturation or childhood setting.
Hij groeide op in een klein dorp.
He grew up in a small village.
Here, 'groeien' is applied metaphorically to denote progress or expansion of an organization.