This is the 1216th most frequent Spanish word.
algunos
"Some" or "a few."
In this sentence, 'algunos' is used to quantify an unspecified subset of students.
Algunos estudiantes llegaron tarde a clase.
Some students arrived late to class.
Here, 'algunos' refers to indefinite days within a larger context of time.
Algunos días prefiero quedarme en casa.
Some days I prefer staying at home.
'Algunos' in this sentence specifies an indefinite quantity of the 'dulces' (candies) being offered.