expect vs expectation

expect is not a noun while expectation is a noun.

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

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

expect (verb)	expectation (verb)
be pregnant with
look forward to the birth of a child
regard something as probable or likely
look forward to the probable occurrence of
consider reasonable or due
consider obligatory; request and expect