Take the tour ×  Some papers (especially about Nested Words
languages) ofter contain term "language of words". What is the
difference between "language" and "language of words"?
share|improve this question I don't think there is a difference;
the author probably wants to insist on the fact that the
language is made up of words. –  nik May 28 '11 at 11:23 @zulon:
I have same suspicion. But: AFAIK they all made up of words --
what is the point? I do not understand. To make things worse,
that wording repeats very often, not just once, and without any
comments. –  Vag May 28 '11 at 11:28 This would be answered more
readily at cstheory.stackexchange.com. I think it should be
migrated. –  TheBigO May 28 '11 at 11:31 @TheBigO: They will say
"This is not reseach level question". –  Vag May 28 '11 at 11:35
add comment  1 Answer  up vote 2 down vote accepted  They might
be trying to avoid confusion with $\omega$-languages - languages
whose elements are infinite sequences of letters ("infinite
words"). Such languages h