This is the 10578th most frequent Polish word.
dochodami
"Dochodami" means "incomes" or "earnings" in English (instrumental plural form).
Here, 'dochodami' is used as an instrumental plural noun ('dochody', 'income'). The preposition 'z' often combines with the instrumental case.
Mam trudności z zarządzaniem własnymi dochodami.
I have difficulty managing my own income.
In this context, 'dochodów' is a plural noun in the genitive case, used to express possession or dependence.
Rodzina zależy od regularnych dochodów moich rodziców.
The family depends on my parents' regular income.
Here, 'dochody' is in the nominative plural case as the subject of the sentence describing an action (increasing the income).