deep, shallow
gnarled
plant, tree

develop, grow
put down, take
I hope those cuttings will take root.

plant

grow

system
ball
crops, vegetables
growth

by its/the roots
She pulled the shrub out by its roots.

humble
Despite his wealth, he never forgot his humble roots.

strong
cultural
severed from our cultural roots by industrialization

working-class
African, French, Scottish, etc.

get back to, go back to, return to
My husband wants to go back to his Irish roots.

trace
They can trace their roots back to the 16th century.

put down
We haven't been here long enough to put down roots.

be cut off from, forget

deep, strong
very
common, same
The two languages share a common root.

historical

have
explore, find, get at, get to, go to
I've spent months trying to get to the root of the problem.

lie at

be planted in sth
Jazz's roots are firmly planted in African tradition.

go back
The company's roots go back to the 18th century.

cause

at (the root of)
It is a moral question at root.
His fears of loneliness lay at the very root of his inability to leave.

root in
The unrest has roots in religious differences.

the root of all evil
They consider globalization to be the root of all evil.

the root of the matter, the root of the problem
I expect money is at the root of the matter.