Johannes Gutenberg vs Johann Gutenberg

Johannes Gutenberg and Johann Gutenberg both are nouns.

Word	Noun	Adjective	Verb	Adverb
Johannes Gutenberg	Yes	No	No	No
Johann Gutenberg	Yes	No	No	No

As nouns, Johannes Gutenberg and Johann Gutenberg are synonyms defined as:

Johannes Gutenberg and Johann Gutenberg: German printer who was the first in Europe to print using movable type and the first to use a press (1400-1468)

Other synonyms of Johannes Gutenberg include Gutenberg.

Johannes Gutenberg (noun)	Johann Gutenberg (noun)
German printer who was the first in Europe to print using movable type and the first to use a press (1400-1468)	German printer who was the first in Europe to print using movable type and the first to use a press (1400-1468)