Sylvanus vs Silvanus

Sylvanus and Silvanus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sylvanus	Yes	No	No	No
Silvanus	Yes	No	No	No

As nouns, Sylvanus and Silvanus are synonyms defined as:

Sylvanus and Silvanus: (Roman mythology) god of woods and fields and flocks; Pan is the Greek counterpart

Sylvanus (noun)	Silvanus (noun)
(Roman mythology) god of woods and fields and flocks; Pan is the Greek counterpart	(Roman mythology) god of woods and fields and flocks; Pan is the Greek counterpart