LaTeX and ConTeXt are two packages that provide sets of macros for the base TeX typesetting system. LaTeX provides macros for things like sectioning, tables of

LaTeX and ConTeXt are two packages that provide sets of macros for the base TeX typesetting system. LaTeX provides macros for things like sectioning, tables of contents, figures, and so on, and the configurable styling of everything separately from the content; ConTeXt's macros are more focused on precise page layout than semantic document structure. TeX Live is a TeX distribution, meaning it contains TeX, LaTeX, ConTeXt, and a variety of other macro packages (including packages building on top of LaTeX, for example), fonts, and so on.