genus Haematoxylon vs genus Haematoxylum

genus Haematoxylon and genus Haematoxylum both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Haematoxylon	Yes	No	No	No
genus Haematoxylum	Yes	No	No	No

As nouns, genus Haematoxylon and genus Haematoxylum are synonyms defined as:

genus Haematoxylon and genus Haematoxylum: small genus of tropical American spiny bushy shrubs or trees

Other synonyms of genus Haematoxylon include Haematoxylon, Haematoxylum.

genus Haematoxylon (noun)	genus Haematoxylum (noun)
small genus of tropical American spiny bushy shrubs or trees	small genus of tropical American spiny bushy shrubs or trees