This is the 134th most frequent Russian word.
считает
"Considers" or "counts."
In this sentence, 'считает' is used in its primary meaning: to count or enumerate something.
Он считает свои деньги каждый вечер.
He counts his money every evening.
In this sentence, 'считает' indicates a belief or opinion, meaning 'thinks' or 'considers'.
Она считает, что это хорошая идея.
She thinks that this is a good idea.
Here, 'считает' is again used in the sense of counting numbers sequentially, illustrating an abstract activity.