This is the 18063rd most frequent Russian word.
функциональное
Functional.
The word 'функциональный' is used here to describe an object (a piece of furniture) in terms of its practical utility and usefulness.
Этот предмет мебели очень функциональный.
This piece of furniture is very functional.
The word 'функциональное' in this context refers to the practical application or functionality of a specific program.
Мы изучали функциональное использование этой программы.
We studied the functional usage of this program.
The word 'функциональное' modifies 'мышление,' referring to the type of thinking focused on functions or practical purposes.