This is the 4122nd most frequent Russian word.
принцип
Principle.
The word 'principle' here refers to a fundamental idea or rule that underpins a system.
Принцип свободы слова является основой демократии.
The principle of freedom of speech is the foundation of democracy.
In this sentence, 'principle' refers to a personal guideline or methodology for conducting work.
Он объяснил свой принцип работы перед началом проекта.
He explained his working principle before starting the project.
Here, 'principles' denotes moral standpoints or ethical beliefs that guide a person's actions.