This is the 1838th most frequent Russian word.
обращаются
"Обращаются" - "address" or "apply" (depending on context).
Here, "обращаются" means 'turn to someone' or 'contact someone' for assistance or advice.
Люди часто обращаются за помощью к специалистам.
People often turn to specialists for help.
In this context, "обращаются" indicates 'change' or 'modify' as it refers to the words adapting their forms.
В русском языке слова обращаются в предложениях согласно падежам.
In Russian, words change their endings in sentences according to the cases.
"Обращаются" in this example means 'to behave or treat someone in a certain way'.