Here's why:
* Perusal means a careful and thorough examination of something, especially written material.
* पाहणी implies a detailed observation and analysis of something, often with the intention of understanding it fully.
Other possible translations, depending on the context, could be:
* पडताळणी (padtaļṇī) - which implies verification or scrutiny.
* अध्ययन (adhyayan) - which emphasizes the act of studying or learning from something.
Ultimately, the best translation depends on the specific context in which "perusal" is used.