What is Linux Distributions ?

A Linux distribution (often abbreviated as distro) is an operating system made from a software collection that is based upon the Linux kernel and, often, a package management system.

Linux users usually obtain their operating system by downloading one of the Linux distributions, which are available for a wide variety of systems ranging from embedded devices and personal computers to powerful supercomputers .

Examples for Linux distribution :

Ubuntu
Linux Mint
Arch Linux
Fedora
Kubuntu
SUSE Linux
Alpine Linux
Red Hat
Debian

Source: Linux Distribution