tears vs bawling

tears and bawling both are nouns.

Word	Noun	Adjective	Verb	Adverb
tears	Yes	No	No	No
bawling	Yes	No	No	No

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

tears: the process of shedding tears (usually accompanied by sobs or other inarticulate sounds)
bawling: loud cries made while weeping

Other hyponyms of tears include snivel, sniveling, sob, sobbing, wailing.

tears (noun)	bawling (noun)
the process of shedding tears (usually accompanied by sobs or other inarticulate sounds)	loud cries made while weeping