This is the 592nd most frequent Persian word.
اصل
Principle, origin, essence.
The word "اصل" is used here to mean "original," referring to the authentic or primary form of the book.
اصل این کتاب را من دارم.
I have the original of this book.
In this sentence, "اصل" means "principle," signifying a foundational truth or standard.
او بر اساس اصل صداقت رفتار میکند.
He acts according to the principle of honesty.
Here, "اصل" is used to mean "main" or "essential," denoting the core or most important aspect of the matter.