tellurian vs terrene

tellurian is a noun but terrene is not a noun.

Word	Noun	Adjective	Verb	Adverb
tellurian	Yes	Yes	No	No
terrene	No	Yes	No	No

As adjectives, tellurian and terrene are synonyms defined as:

tellurian and terrene: of or relating to or inhabiting the land as opposed to the sea or air

Other synonyms of tellurian include telluric, terrestrial.

tellurian (noun)	terrene (noun)
an inhabitant of the earth

tellurian (adjective)	terrene (adjective)
of or relating to or inhabiting the land as opposed to the sea or air	of or relating to or inhabiting the land as opposed to the sea or air
	belonging to this earth or world; not ideal or heavenly