La patro starasapud la filo = The father stands by (at the side of) his (the) son.
La ĉefa vorto staras en la fino = The chief word stands at the end.
For instance, in the phrase mi staras apud li (I am standing by him); apud here is a preposition because it is followed by its complement li.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "staras" in a variety of sentences. We hope that you will now be able to make sentences using this word.