weeping vs sobbing

weeping and sobbing both are nouns.

Word	Noun	Adjective	Verb	Adverb
weeping	Yes	Yes	No	No
sobbing	Yes	No	No	No

As nouns, sobbing is a hyponym of weeping; that is, sobbing is a word with a more specific, narrower meaning than weeping:

weeping: the process of shedding tears (usually accompanied by sobs or other inarticulate sounds)
sobbing: convulsive gasp made while weeping

Other hyponyms of weeping include snivel, sniveling, sob, bawling, wailing.

weeping (noun)	sobbing (noun)
the process of shedding tears (usually accompanied by sobs or other inarticulate sounds)	convulsive gasp made while weeping

weeping (adjective)	sobbing (adjective)
showing sorrow
having branches or flower heads that bend downward