As nouns the difference between mulm and zulm
is that mulm is the sludge that collects at the bottom of an aquarium, consisting of fish excrement, decaying plant matter, and other assorted dreck while zulm is (islam) sin, wrong-doing, injustice.
mulm
English
Noun
(-)
The sludge that collects at the bottom of an aquarium, consisting of fish excrement, decaying plant matter, and other assorted dreck. zulm
English
Noun
(-)
(Islam) sin, wrong-doing, injustice