splash guard vs mudguard

splash guard and mudguard both are nouns.

Word	Noun	Adjective	Verb	Adverb
splash guard	Yes	No	No	No
mudguard	Yes	No	No	No

As nouns, splash guard and mudguard are synonyms defined as:

splash guard and mudguard: a curved piece above the wheel of a bicycle or motorcycle to protect the rider from water or mud thrown up by the wheels

Other synonyms of splash guard include splash-guard.

splash guard (noun)	mudguard (noun)
a curved piece above the wheel of a bicycle or motorcycle to protect the rider from water or mud thrown up by the wheels	a curved piece above the wheel of a bicycle or motorcycle to protect the rider from water or mud thrown up by the wheels