TeX live is a distribution and it comes with many things (TeX, LaTeX, ConTeXt, fonts, ...). Both LaTeX and ConTeXt are built on top of bare TeX and add lots of

TeX live is a distribution and it comes with many things (TeX, LaTeX, ConTeXt, fonts, ...). Both LaTeX and ConTeXt are built on top of bare TeX and add lots of features. I have used ConTeXt a quite a bit, and it seems to be more designed to typeset whole books, whereas LaTeX is very good at scientific papers.