Gd vs gadolinium

Gd and gadolinium both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gd	Yes	No	No	No
gadolinium	Yes	No	No	No

As nouns, Gd and gadolinium are synonyms defined as:

Gd and gadolinium: a ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group

Other synonyms of Gd include atomic number 64.

Gd (noun)	gadolinium (noun)
a ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group	a ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group