Fonts

First, be aware of the 21 fonts provided by the ConTeXt distribution's Fonts.

If required, you can regenerate the font database: mtxrun --script font --reload --force

How to use the fonts included by default in the distribution

%= Specific layout for rendering on the wiki
\definepapersize[sheet][width=16cm,height=11cm]
\setuppapersize[sheet]
\setuplayout[topspace=0.5mm,            
             backspace=0.5mm,
             header=0pt,
             headerdistance=0pt,
             footer=0pt,
             footerdistance=0pt,
             width=15cm,
             height=11cm]
%
\definefontfamily [latinmodernroman] [rm] [latinmodernroman]
\definefontfamily [latinmodernsans]  [rm] [latinmodernsans]
\definefontfamily [latinmodernmono]  [rm] [latinmodernmono]
\definefontfamily [texgyreadventor]  [rm] [texgyreadventor]
\definefontfamily [texgyrebonum]     [rm] [texgyrebonum]
\definefontfamily [texgyrecursor]    [rm] [texgyrecursor]
\definefontfamily [texgyrechorus]    [rm] [texgyrechorus]
\definefontfamily [texgyrepagella]   [rm] [texgyrepagella]
\definefontfamily [texgyreshola]     [rm] [texgyreshola]
\definefontfamily [texgyretermes]    [rm] [texgyretermes]
\definefontfamily [dejavuserif]      [rm] [dejavuserif]
\definefontfamily [dejavusans]       [rm] [dejavusans]
\definefontfamily [dejavusansmono]   [rm] [dejavusansmono]
\definefontfamily [gentium]          [rm] [gentium]
\setupbodyfont[latinmodernroman]
%
\setupbodyfont[12pt]  %== Doesn't in the wiki if different, but ok on https://live.contextgarden.net/
%
\starttext
%
\startitemize[n,packed]
                                    \item The quick brown fox jumps over the lazy dog (default)\\
\switchtobodyfont[latinmodernroman] \item The quick brown fox jumps over the lazy dog\\
\switchtobodyfont[latinmodernsans]  \item The quick brown fox jumps over the lazy dog\\
\switchtobodyfont[latinmodernmono]  \item The quick brown fox jumps over the lazy dog\\
\switchtobodyfont[texgyreadventor]  \item The quick brown fox jumps over the lazy dog\\
\switchtobodyfont[texgyrebonum]     \item The quick brown fox jumps over the lazy dog\\
\switchtobodyfont[texgyrechorus]    \item The quick brown fox jumps over the lazy dog\\
\switchtobodyfont[texgyrecursor]    \item The quick brown fox jumps over the lazy dog\\
\switchtobodyfont[texgyrepagella]   \item The quick brown fox jumps over the lazy dog\\
\switchtobodyfont[texgyreshola]     \item The quick brown fox jumps over the lazy dog\\
\switchtobodyfont[texgyretermes]    \item The quick brown fox jumps over the lazy dog\\
\switchtobodyfont[dejavuserif]      \item The quick brown fox jumps over the lazy dog\\
\switchtobodyfont[dejavusans]       \item The quick brown fox jumps over the lazy dog\\
\switchtobodyfont[dejavusansmono]   \item The quick brown fox jumps over the lazy dog\\
\switchtobodyfont[gentium]          \item The quick brown fox jumps over the lazy dog\\
\stopitemize


\stoptext

This produces: