tuck vs pabulum

tuck and pabulum both are nouns.

Word	Noun	Adjective	Verb	Adverb
tuck	Yes	No	Yes	No
pabulum	Yes	No	No	No

As nouns, pabulum is a hypernym of tuck; that is, pabulum is a word with a broader meaning than tuck:

Other hypernyms of tuck include comestible, eatable, edible, victual, victuals.

tuck (noun)	pabulum (noun)
a narrow flattened pleat or fold that is stitched in place	insipid intellectual nourishment
a straight sword with a narrow blade and two edges	any substance that can be used as food
(sports) a bodily position adopted in some sports (such as diving or skiing) in which the knees are bent and the thighs are drawn close to the chest
eatables (especially sweets)

tuck (verb)	pabulum (verb)
fit snugly into
make a tuck or several folds in
draw together into folds or puckers