This is the 12644th most frequent Russian word.
концепция
"Концепция" — concept; an overarching idea or framework.
In this sentence, "концепция" refers to a well-defined idea or plan for the project.
Новая концепция проекта была представлена на собрании.
The new concept of the project was presented at the meeting.
Here, "концепция" is used to signify a creative and strategic idea underlying the design.
Концепция дизайна была разработана за неделю.
The design concept was developed within a week.
In this case, "концепция" denotes a theoretical perspective or a philosophical framework.