Referring to something that is five years in age.

पांच साल पुराना

English Usage: The five-year-old child is very intelligent.

Hindi Usage: पांच साल पुराना बच्चा बहुत बुद्धिमान है।

A plan designed to last for five years.

पांच साल का योजना

English Usage: The government introduced a five-year plan for economic development.

Hindi Usage: सरकार ने आर्थिक विकास के लिए पांच साल का योजना पेश किया।