This is the 363rd most frequent Estonian word.
tule
The Estonian word "tule" can mean "fire" (genitive case) or "come" (imperative form of "tulema").
Here, "tule" is the imperative form of the verb "tulema" (to come), used to ask or request someone to come.
Palun tule siia.
Please come here.
In this sentence, "tuld" is the partitive case of the noun "tuli" (fire), indicating a small or undefined amount of fire.
Me nägime kaugel metsas eredat tuld.
We saw a bright fire in the distance in the forest.
Here, "tuli" is in the nominative case, and it refers to creating fire.