1.Linux is a generic term which is a kernel and has several distributions, whereas Ubuntu is one of the Linux kernel-based distribution. 2.Linux started its journey in 1991, whereas Ubuntu took off in 2004. 3.Linux was initially predominant among servers, making it hardly user-friendly among home and office users, whereas with the advent of Ubuntu, which was available on desktop computers, now becoming more receptive and friendly with home and office users. 4.Several Linux distributions are available like Fedora, Suse, Debian and so on, whereas Ubuntu is one such desktop-based distribution based on Linux kernel. 5.Linux is based on the Linux kernel, whereas Ubuntu is based on the Linux system and is one project or distribution. 6.Linux is secure, and most of the Linux distributions do not