fender vs cowcatcher

fender and cowcatcher both are nouns.

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

As nouns, fender and cowcatcher are synonyms defined as:

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

Other synonyms of fender include buffer, pilot.

fender (noun)	cowcatcher (noun)
a cushion-like device that reduces shock due to an impact	an inclined metal frame at the front of a locomotive to clear the track
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