Theresa vs Teresa

Theresa and Teresa both are nouns.

Word	Noun	Adjective	Verb	Adverb
Theresa	Yes	No	No	No
Teresa	Yes	No	No	No

As nouns, Theresa and Teresa are synonyms defined as:

Theresa and Teresa: Indian nun and missionary in the Roman Catholic Church (born of Albanian parents in what is now Macedonia); dedicated to helping the poor in India (1910-1997)

Other synonyms of Theresa include Agnes Gonxha Bojaxhiu, Mother Teresa, Mother Theresa.

Theresa (noun)	Teresa (noun)
Indian nun and missionary in the Roman Catholic Church (born of Albanian parents in what is now Macedonia); dedicated to helping the poor in India (1910-1997)	Indian nun and missionary in the Roman Catholic Church (born of Albanian parents in what is now Macedonia); dedicated to helping the poor in India (1910-1997)