I am student software developer, i have been introduced to both Function and Data Structure base on the teaching curriculum.
My curiosity rises from the understanding of the importance of both topics, how do they relate to each other in real life programming?
What can I use the knowledge of Function to do in Data Structure or what can I use the knowledge of Data Structure to do in Function?

I understand that Data structure is how a developer organize his data and Function helps reduce rewriting lines of code when needed to be reused.