Re-use chapter and section titles in an introductory section on the thesis' structure?

Question

I would like to re-use the titles of chapters and sections in a section on the structure of my thesis. How can I accomplish inclusion of the section heading, as it is for example used in the table of contents, in such a chapter?

A MWE illustrating my intentions goes as follows:

\documentclass{article}

\begin{document}

\section{Introduction}

\subsection{Coarse Overview}
\subsection{Structure}

In Section~\ref{sec:related_work} we talk about XXXX % XXXX should actually be "Related Work".
In Section~\ref{sec:model} we talk about XXXX % XXXX should actually be "Model".
In Section~\ref{sec:evaluation} we talk about XXXX % XXXX should actually be "Evaluation".
In Section~\ref{sec:conclusion} we conclude.

\section{Related Work}
\label{sec:related_work}
\section{Model}
\label{sec:model}
\section{Evaluation}
\label{sec:evaluation}
\section{Conclusion}
\label{sec:conclusion}

\end{document}