cowcatcher vs fender

cowcatcher and fender both are nouns.

Word	Noun	Adjective	Verb	Adverb
cowcatcher	Yes	No	No	No
fender	Yes	No	No	No

As nouns, cowcatcher and fender are synonyms defined as:

cowcatcher and fender: an inclined metal frame at the front of a locomotive to clear the track

Other synonyms of cowcatcher include buffer, pilot.

cowcatcher (noun)	fender (noun)
an inclined metal frame at the front of a locomotive to clear the track	a cushion-like device that reduces shock due to an impact
	a barrier that surrounds the wheels of a vehicle to block splashing water or mud
	a low metal guard to confine falling coals to a hearth
	an inclined metal frame at the front of a locomotive to clear the track