cry vs weep

cry is a noun but weep is not a noun.

Word	Noun	Adjective	Verb	Adverb
cry	Yes	No	Yes	No
weep	No	No	Yes	No

As verbs, cry and weep are synonyms defined as:

cry (noun)	weep (noun)
a loud utterance; often in protest or opposition
a fit of weeping
a slogan used to rally support for a cause
a loud utterance of emotion (especially when inarticulate)
the characteristic utterance of an animal

cry (verb)	weep (verb)
shed tears because of sadness, rage, or pain	shed tears because of sadness, rage, or pain
bring into a particular state by crying
utter a sudden loud cry
proclaim or announce in public
utter a characteristic sound
utter aloud; often with surprise, horror, or joy
demand immediate action