wad vs jampack

wad is a noun but jampack is not a noun.

Word	Noun	Adjective	Verb	Adverb
wad	Yes	No	Yes	No
jampack	No	No	Yes	No

As verbs, wad and jampack are synonyms defined as:

Other synonyms of wad include chock up, cram, jam, ram.

wad (noun)	jampack (noun)
a wad of something chewable as tobacco
(often followed by `of') a large number or amount or extent
a small mass of soft material

wad (verb)	jampack (verb)
crowd or pack to capacity	crowd or pack to capacity
compress into a wad