gemsbuck vs gemsbok

gemsbuck and gemsbok both are nouns.

Word	Noun	Adjective	Verb	Adverb
gemsbuck	Yes	No	No	No
gemsbok	Yes	No	No	No

As nouns, gemsbuck and gemsbok are synonyms defined as:

gemsbuck and gemsbok: large South African oryx with a broad black band along its flanks

Other synonyms of gemsbuck include Oryx gazella.

gemsbuck (noun)	gemsbok (noun)
large South African oryx with a broad black band along its flanks	large South African oryx with a broad black band along its flanks