telluric vs tellurian

telluric is not a noun while tellurian is a noun.

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

As adjectives, telluric and tellurian are synonyms defined as:

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

Other synonyms of telluric include terrene, terrestrial.

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

telluric (adjective)	tellurian (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
of or relating to or containing the chemical element tellurium