samarium vs Sm

samarium and Sm both are nouns.

Word	Noun	Adjective	Verb	Adverb
samarium	Yes	No	No	No
Sm	Yes	No	No	No

As nouns, samarium and Sm are synonyms defined as:

samarium and Sm: a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite

Other synonyms of samarium include atomic number 62.

samarium (noun)	Sm (noun)
a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite	a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite