This is the 133rd most frequent Estonian word.
töö
Work.
Here, 'töö' is in the partitive case to indicate the workload or task that was completed.
Ma lõpetasin just oma töö.
I just finished my work.
Here, 'tööd' is in the partitive case, representing an unspecified quantity of 'work' that the subject has to perform.
Mul on täna palju tööd teha.
I have a lot of work to do today.
In this sentence, 'töö' is used in the nominative case, meaning 'job' as in a person's role or employment.