batch vs inundation

batch and inundation both are nouns.

Word	Noun	Adjective	Verb	Adverb
batch	Yes	No	Yes	No
inundation	Yes	No	No	No

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

Other hyponyms of batch include deluge, flood, torrent, haymow.

batch (noun)	inundation (noun)
a collection of things or persons to be handled together	the rising of a body of water and its overflowing onto normally dry land
all the loaves of bread baked at the same time	an overwhelming number or amount
(often followed by `of') a large number or amount or extent

batch (verb)	inundation (verb)
batch together; assemble or process as a batch