This is the 164th most frequent Estonian word.
neli
The Estonian word "neli" means "four" in English.
In this case, 'neli' indicates the frequency of an action, which is the number of 'korda' (times) something occurred.
Ta helistas mulle neli korda täna.
He/she called me four times today.
In this sentence, 'neli' is used as a numerical adjective denoting the quantity of objects, which are 'õuna' (apples).
Mul on neli õuna.
I have four apples.
Here, 'neli' functions as a numerical quantifier specifying the duration of an activity, expressed in 'tundi' (hours).