Oort vs Jan Oort

Oort and Jan Oort both are nouns.

Word	Noun	Adjective	Verb	Adverb
Oort	Yes	No	No	No
Jan Oort	Yes	No	No	No

As nouns, Oort and Jan Oort are synonyms defined as:

Oort and Jan Oort: Dutch astronomer who proved that the galaxy is rotating and proposed the existence of the Oort cloud (1900-1992)

Other synonyms of Oort include Jan Hendrix Oort.

Oort (noun)	Jan Oort (noun)
Dutch astronomer who proved that the galaxy is rotating and proposed the existence of the Oort cloud (1900-1992)	Dutch astronomer who proved that the galaxy is rotating and proposed the existence of the Oort cloud (1900-1992)