Tammuz vs Thammuz

Tammuz and Thammuz both are nouns.

Word	Noun	Adjective	Verb	Adverb
Tammuz	Yes	No	No	No
Thammuz	Yes	No	No	No

As nouns, Tammuz and Thammuz are synonyms defined as:

Tammuz and Thammuz: the tenth month of the civil year; the fourth month of the ecclesiastic year (in June and July)

Tammuz (noun)	Thammuz (noun)
Sumerian and Babylonian god of pastures and vegetation; consort of Inanna	the tenth month of the civil year; the fourth month of the ecclesiastic year (in June and July)
the tenth month of the civil year; the fourth month of the ecclesiastic year (in June and July)