e vs transcendental number

e and transcendental number both are nouns.

Word	Noun	Adjective	Verb	Adverb
e	Yes	No	No	No
transcendental number	Yes	No	No	No

As nouns, transcendental number is a hypernym of e; that is, transcendental number is a word with a broader meaning than e:

e: the base of the natural system of logarithms; approximately equal to 2.718282...
transcendental number: an irrational number that is not algebraic

e (noun)	transcendental number (noun)
the 5th letter of the Roman alphabet	an irrational number that is not algebraic
the base of the natural system of logarithms; approximately equal to 2.718282...