As nouns the difference between mids and fids
is that mids is plural of lang=en while fids is plural of lang=en.
As an initialism FIDS is
Flight Information Display System; a key system of every airport for displaying actual flight information on several display devices (e.g. monitors, LED boards, etc.) and Intranet real-time information distribution/broadcasting for airport staff.
mids
English
Etymology 1
Noun
(head)
Etymology 2
Shortening of middle (possibly either genitive or plural).
Noun
(-)
(slang) Middle-grade marijuana.
Synonyms
* (l)
Coordinate terms
* (l), (l), (l)
* (l), (l), (l), (l)
* (l), (l)
Anagrams
*
fids
English
Noun
(head)
Anagrams
*
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==Volapük==
Noun
(head)