mudguard

As a noun mudguard

is a cover over the wheels of a vehicle, or a flap behind that wheel, to prevent water and mud being.

As an initialism https is

(internet) hypertext transfer protocol secure (http secure), an encrypted form of information transfer on the internet.

As nouns the difference between mudguard and null

is that mudguard is a cover over the wheels of a vehicle, or a flap behind that wheel, to prevent water and mud being while null is zero, nil; the cardinal number before einn.

As nouns the difference between vanguard and mudguard

is that vanguard is the leading units at the front of an army or fleet while mudguard is a cover over the wheels of a vehicle, or a flap behind that wheel, to prevent water and mud being.

As nouns the difference between taxonomy and mudguard

is that taxonomy is the science or the technique used to make a classification while mudguard is a cover over the wheels of a vehicle, or a flap behind that wheel, to prevent water and mud being.