lutecium vs Lu

lutecium and Lu both are nouns.

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

As nouns, lutecium and Lu are synonyms defined as:

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

Other synonyms of lutecium include atomic number 71, lutetium.

lutecium (noun)	Lu (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