This is the 6054th most frequent Polish word.
akar
The Polish word "akar" refers to a mite or tick (a small arachnid).
In this sentence, 'akar' is used metaphorically to refer to the 'root' of a problem, similar to the origin or cause of an issue.
Akar tego problemu tkwi w nieporozumieniu.
The root of this problem lies in a misunderstanding.
Here, 'akar' is used in its literal sense to mean the root of a plant in a botanical context.
W botanice 'akar' oznacza część korzeniową rośliny.
In botany, 'akar' refers to the root part of a plant.
In this case, 'akar' is again used metaphorically to signify the core or essential element of an issue or discussion.