grass vs United Kingdom of Great Britain and Northern Ireland

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

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

grass (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
street names for marijuana	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
bulky food like grass or hay for browsing or grazing horses or cattle
a police informer who implicates many people
narrow-leaved green herbage: grown as lawns; used as pasture for grazing animals; cut and dried as hay

grass (verb)	United Kingdom of Great Britain and Northern Ireland (verb)
give away information about somebody
shoot down, of birds
feed with grass
cover with grass
spread out clothes on the grass to let it dry and bleach