This is the 833rd most frequent Bulgarian word.
използвани
"Използвани" means "used" in English.
In this sentence, 'използвани' serves as an adjective describing 'методи' (methods), indicating that they are the ones frequently employed.
Списъкът съдържа най-често използвани методи.
The list contains the most frequently used methods.
Here, 'използвани' implies an action that should be performed on the files, namely to use them with caution.
Файловете трябва да бъдат използвани внимателно.
The files must be used carefully.
Here, 'използвани' denotes that the materials were utilized or applied in creating the product.