Avoid acronym list when acronym environment is \include[d]

Question

I want to keep my acronym environment in a separate file and avoid printing out the whole acronym list. Still the option [nolist] of the acronym package seems not to work when the acronym environment is included into the main document.

Please consider the following MWE

\documentclass{article}

\usepackage[nolist]{acronym}
\usepackage{filecontents}

\begin{filecontents}{acronym.tex}

\begin{acronym}
  \acro{NLP}{Natural Language Processing}
\end{acronym}

\end{filecontents}


\begin{document}

First use of \ac{NLP}. Second use of \ac{NLP}.

\include{acronym}

\end{document}

which gives

Yet when I take the option [nolist] out I get the correct

Answer 1

I get the expected result if I use \input instead of \include.

\documentclass{article}

\usepackage[nolist]{acronym}
\usepackage{filecontents}

\begin{filecontents}{acronym.tex}

\begin{acronym}
  \acro{NLP}{Natural Language Processing}
\end{acronym}

\end{filecontents}


\begin{document}

First use of \ac{NLP}. Second use of \ac{NLP}.

\input{acronym}

\end{document}