lutecium vs lutetium

lutecium and lutetium both are nouns.

Word	Noun	Adjective	Verb	Adverb
lutecium	Yes	No	No	No
lutetium	Yes	No	No	No

As nouns, lutecium and lutetium are synonyms defined as:

lutecium and lutetium: a trivalent metallic element of the rare earth group; usually occurs in association with yttrium

Other synonyms of lutecium include atomic number 71, Lu.

lutecium (noun)	lutetium (noun)
a trivalent metallic element of the rare earth group; usually occurs in association with yttrium	a trivalent metallic element of the rare earth group; usually occurs in association with yttrium