This is the 227th most frequent Greek word.
κάποιες
"Κάποιες" means "some" or "certain" (feminine plural).
In this sentence, 'κάποιες' means 'sometimes' and is used to express frequency.
Κάποιες φορές αγαπώ να περπατώ στην παραλία.
Sometimes I love walking on the beach.
Here, 'κάποιες' refers to a subset of people, specifically 'some of my old friends'.
Μίλησα με κάποιες από τις παλιές φίλες μου.
I talked to some of my old friends.
In this sentence, 'κάποιες' is used to indicate 'some' or 'a few' in terms of likelihood or opportunity.