buildworld, installworld, world: etymology

[Graham Perrin]

On 14/01/2021 05:15, Warner Losh wrote:

 > Re: How does /usr/bin/uname work in plain english?

> On Wed, Jan 13, 2021, 10:13 PM Graham Perrin <grahamperrin at gmail.com 
> <mailto:grahamperrin at gmail.com>> wrote:
>
>
>     … the installworld part of a FreeBSD-CURRENT
>     system update routine?
>
>     (Am I confused?)
>
>
> He has a newer kernel than userland... however that came to be...
>
> Warner


Asked a few years ago 
<https://forums.freebsd.org/threads/base-system-world-userland.34735/> 
but there was not exactly an answer.

Why, instead of 'builduserland' or 'builduserspace', do we have 
'buildworld'?

<https://en.wikipedia.org/wiki/User_space#USERLAND>

Was it maybe that the word is shorter?