Tellus vs Terra

Tellus and Terra both are nouns.

Word	Noun	Adjective	Verb	Adverb
Tellus	Yes	No	No	No
Terra	Yes	No	No	No

As nouns, Tellus and Terra are synonyms defined as:

Tellus and Terra: (Roman mythology) goddess of the earth; protector of marriage and fertility; identified with Greek Gaea

Tellus (noun)	Terra (noun)
(Roman mythology) goddess of the earth; protector of marriage and fertility; identified with Greek Gaea	(Roman mythology) goddess of the earth; protector of marriage and fertility; identified with Greek Gaea