As nouns the difference between mulis and mules
is that mulis is plural form of lang=en while mules is plural of lang=en.
As a verb mules is
to remove skin from (an animal) to prevent myiasis.
mulis
English
Noun
(head)
----
mules
English
Etymology 1
Noun
(head)
Etymology 2
From the surname of the procedure's inventor, John Mules.
Verb
To remove skin from (an animal) to prevent myiasis.
----