Synonymizing these tags would be an absolutely wrong and harmful decision.

Let's look across the Stack Exchange network to see what sites like "Unix & Linux" or "Super User" say about Linux, Unix, and other operating systems:

Is Linux a Unix? Which is answered with "it depends", basically.

Is Mac OS X UNIX? Which is answered mostly with "yes".

Do we want to synonymize osx & unix? The users of "Unix & Linux" are more confident about the similarities of these two than they are of linux & unix.

There are other questions and answers on the topic regarding comparing various operating systems to each other and pointing out their similarities.

At the end of the day, unix may be a bit like an umbrella tag, under which you could put a handful of other operating system tags, like osx, linux, android, ios... but Linux and Unix are not exactly the same thing. Nor is OSX and Unix.

While things that work in Unix will tend to work in OS X or Linux, it's not necessarily true for the reverse.

Synonymizing these tags would be an absolutely wrong and harmful decision.

Let's look across the Stack Exchange network to see what sites like "Unix & Linux" or "Super User" say about Linux, Unix, and other operating systems:

Is Linux a Unix? Which is answered with "it depends", basically.

Is Mac OS X UNIX? Which is answered mostly with "yes".

Do we want to synonymize osx & unix? The users of "Unix & Linux" are more confident about the similarities of these two than they are of linux & unix.

There are other questions and answers on the topic regarding comparing various operating systems to each other and pointing out their similarities.

At the end of the day, unix may be a bit like an umbrella tag, under which you could put a handful of other operating system tags, like osx, linux, android, ios... but Linux and Unix are not exactly the same thing. Nor is OSX and Unix.

While things that work in Unix will tend to work in OS X or Linux, it's not necessarily true for the reverse.

Synonymizing these tags would be an absolutely wrong and harmful decision.

Let's look across the Stack Exchange network to see what sites like "Unix & Linux" or "Super User" say about Linux, Unix, and other operating systems:

Is Linux a Unix? Which is answered with "it depends", basically.

Is Mac OS X UNIX? Which is answered mostly with "yes".

There are other questions and answers on the topic regarding comparing various operating systems to each other and pointing out their similarities.

At the end of the day, unix may be a bit like an umbrella tag, under which you could put a handful of other operating system tags, like osx, linux, android, ios... but Linux and Unix are not exactly the same thing. Nor is OSX and Unix.

While things that work in Unix will tend to work in OS X or Linux, it's not necessarily true for the reverse.

Synonymizing these tags would be an absolutely wrong and harmful decision.

Let's look across the Stack Exchange network to see what sites like "Unix & Linux" or "Super User" say about Linux, Unix, and other operating systems:

Is Linux a Unix? Which is answered with "it depends", basically.

Is Mac OS X UNIX? Which is answered mostly with "yes".

Do we want to synonymize osx & unix? The users of "Unix & Linux" are more confident about the similarities of these two than they are of linux & unix.

There are other questions and answers on the topic regarding comparing various operating systems to each other and pointing out their similarities.

At the end of the day, unix may be a bit like an umbrella tag, under which you could put a handful of other operating system tags, like osx, linux, android, ios... but Linux and Unix are not exactly the same thing. Nor is OSX and Unix.

While things that work in Unix will tend to work in OS X or Linux, it's not necessarily true for the reverse.