atomic number 65 vs Tb

atomic number 65 and Tb both are nouns.

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

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

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

Other synonyms of atomic number 65 include terbium.

atomic number 65 (noun)	Tb (noun)
a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite	a unit of information equal to 1000 gigabits or 10^12 (1,000,000,000,000) bits
	a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite