Jehovah vs Jahweh

Jehovah and Jahweh both are nouns.

Word	Noun	Adjective	Verb	Adverb
Jehovah	Yes	No	No	No
Jahweh	Yes	No	No	No

As nouns, Jehovah and Jahweh are synonyms defined as:

Jehovah and Jahweh: a name for the God of the Old Testament as transliterated from the Hebrew consonants YHVH

Other synonyms of Jehovah include Jahvey, JHVH, Wahvey, Yahve, Yahveh, Yahwe, Yahweh, YHVH, YHWH.

Jehovah (noun)	Jahweh (noun)
a name for the God of the Old Testament as transliterated from the Hebrew consonants YHVH	a name for the God of the Old Testament as transliterated from the Hebrew consonants YHVH
terms referring to the Judeo-Christian God