terbium vs atomic number 65

terbium and atomic number 65 both are nouns.

Word	Noun	Adjective	Verb	Adverb
terbium	Yes	No	No	No
atomic number 65	Yes	No	No	No

As nouns, terbium and atomic number 65 are synonyms defined as:

terbium and atomic number 65: a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite

Other synonyms of terbium include Tb.

terbium (noun)	atomic number 65 (noun)
a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite	a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite