Down vs John L. H. Down

Down and John L. H. Down both are nouns.

Word	Noun	Adjective	Verb	Adverb
Down	Yes	No	No	No
John L. H. Down	Yes	No	No	No

As nouns, Down and John L. H. Down are synonyms defined as:

Down and John L. H. Down: English physician who first described Down's syndrome (1828-1896)

Other synonyms of Down include John Langdon Down.

Down (noun)	John L. H. Down (noun)
English physician who first described Down's syndrome (1828-1896)	English physician who first described Down's syndrome (1828-1896)