tuck vs United Kingdom of Great Britain and Northern Ireland

tuck and United Kingdom of Great Britain and Northern Ireland both are nouns.

Word	Noun	Adjective	Verb	Adverb
tuck	Yes	No	Yes	No
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No

tuck (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
a narrow flattened pleat or fold that is stitched in place	a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom
a straight sword with a narrow blade and two edges
(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)	United Kingdom of Great Britain and Northern Ireland (verb)
fit snugly into
make a tuck or several folds in
draw together into folds or puckers