The main question is, how can this be done with an environment? (Because I think that this would be the right way)
I want some parts to always have the same look. Have I done this right? Or should/can \newenvironment be used (if so, I don't know how). Would you generally recommend an other layout? Maybe something different than \subsection*? I thought about a table, but the descriptions of the characteristics are "very" long... .
My attempt, but I have to write characteristic1 (and so on) every time
\documentclass[preview, border={10pt}]{standalone}
\usepackage{lipsum}
\newcommand{\typ}[4]{\subsection*{typ: #1}%
\begin{description}%
\item[characteristic1] #2%
\item[characteristic2] #3%
\item[characteristic3] #4%
\end{description}}%
\newenvironment{typEnvironment}[1]%
{%
\subsection*{typ: #1}%
\description%
}%
{%
\enddescription%
}%
\begin{document}
\typ{title}{\lipsum[4]}{\lipsum[4]}{\lipsum[4]}
\begin{typEnvironment}{title}
\item[characteristic1] \lipsum[4]
\item[characteristic2] \lipsum[4]
\item[characteristic3] \lipsum[4]
\end{typEnvironment}
\end{document}

\item[characteristic1] #2and so on – user1 Aug 17 '17 at 22:09\newlistfromenumitem– Aug 17 '17 at 22:37\begin{}and\end{}should be avoided in definitions of environments generally? (See OP's comment on my answer.) If so, is there somewhere which explains why? – cfr Aug 18 '17 at 00:31