https://meta.wikimedia.org/wiki/Data_dumps/Dump_format#Multistream_dumps should answer your questions.

If you are using the dumps and have questions about them, you should subscribe to the xmldatadumps-l
 mailing list. We announce changes to the schema there, issues with particular runs, and folks are fairly quick to respond to questions about format and use as well.

Ariel

On Sat, Feb 1, 2020 at 12:41 AM Furkan Gözükara <monstermmorpg@gmail.com> wrote:
1 : enwiktionary-20200120-pages-articles-multistream.xml.bz2 854.6 MB

2 : enwiktionary-20200120-pages-meta-current.xml.bz2 890.8 MB


so number 2 covers 1 and additional files?
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