Musk vs. Must

Difference Between Musk and Must
Musknoun
A greasy secretion with a powerful odour, produced in a glandular sac of the male musk deer and used in the manufacture of perfumes.
Mustverb
To do with certainty; indicates that the speaker is certain that the subject will have executed the predicate.
If it has rained all day, it must be very wet outside.You picked one of two, and it wasn't the first: it must have been the second.Musknoun
A similar secretion produced by the otter and the civet.
Mustverb
To do as a requirement; indicates that the sentence subject is required as an imperative or directive to execute the sentence predicate, with failure to do so resulting in a negative consequence.
You must arrive in class on time. — the requirement is an imperativeThis door handle must be rotated fully. — the requirement is a directiveArise, and go into the city, and it shall be told thee what thou must do. (Bible, Acts 9:6)Musknoun
A synthetic organic compound used as a substitute for the above.
Mustverb
said about something that is very likely, probable, or certain to be true
The children must be asleep by now.Musknoun
The odour of musk.
Mustverb
(transitive) To make musty.
Musknoun
The musk deer (genus Moschus).
Mustverb
(intransitive) To become musty.
Musknoun
The musk plant (Mimulus moschatus).
Mustnoun
Something that is mandatory or required.
If you'll be out all day, a map is a must.Musknoun
A plant of the genus Erodium (Erodium moschatum); the musky heronsbill.
Mustnoun
The property of being stale or musty.
Musknoun
A plant of the genus Muscari; grape hyacinth.
Mustnoun
Something that exhibits the property of being stale or musty.
Musknoun
The scent of human genitalia when aroused or unwashed.
I was so excited I could smell my own musk.Mustnoun
Fruit juice that will ferment or has fermented, usually grapes.
Muskverb
(transitive) To perfume with musk.
Mustnoun
A time during which male elephants exhibit increased levels of sexual activity and aggressiveness also spelled musth.
Musknoun
an odorous glandular secretion from the male musk deer; used as a perfume fixative
Mustnoun
An elephant in this sexual and aggressive state.
Musknoun
the scent of musk
Mustnoun
a necessary or essential thing;
seat belts are an absolute mustMustnoun
grape juice before or during fermentation
Mustnoun
the quality of smelling or tasting old or stale or mouldy
Mustadjective
highly recommended;
a book that is must reading