swamp vs inundate

swamp is a noun but inundate is not a noun.

Word	Noun	Adjective	Verb	Adverb
swamp	Yes	No	Yes	No
inundate	No	No	Yes	No

As verbs, swamp and inundate are synonyms defined as:

Other synonyms of swamp include deluge, flood.

swamp (noun)	inundate (noun)
low land that is seasonally flooded; has more woody plants than a marsh and better drainage than a bog
a situation fraught with difficulties and imponderables

swamp (verb)	inundate (verb)
fill quickly beyond capacity; as with a liquid	fill or cover completely, usually with water
drench or submerge or be drenched or submerged	fill quickly beyond capacity; as with a liquid