giraffe vs okapi

giraffe and okapi both are nouns.

Word	Noun	Adjective	Verb	Adverb
giraffe	Yes	No	No	No
okapi	Yes	No	No	No

As nouns, okapi is a hyponym of giraffe; that is, okapi is a word with a more specific, narrower meaning than giraffe:

giraffe: tallest living quadruped; having a spotted coat and small horns and very long neck and legs; of savannahs of tropical Africa
okapi: similar to the giraffe but smaller with much shorter neck and stripe on the legs

Other hyponyms of giraffe include Okapia johnstoni.

giraffe (noun)	okapi (noun)
tallest living quadruped; having a spotted coat and small horns and very long neck and legs; of savannahs of tropical Africa	similar to the giraffe but smaller with much shorter neck and stripe on the legs