expectation vs hopefulness

expectation and hopefulness both are nouns.

Word	Noun	Adjective	Verb	Adverb
expectation	Yes	No	No	No
hopefulness	Yes	No	No	No

As nouns, hopefulness is a hypernym of expectation; that is, hopefulness is a word with a broader meaning than expectation:

expectation (noun)	hopefulness (noun)
belief about (or mental picture of) the future	the feeling you have when you have hope
the sum of the values of a random variable divided by the number of values	full of hope
the feeling that something is about to happen
anticipating with confidence of fulfillment