umbrella vs brolly

umbrella and brolly both are nouns.

Word	Noun	Adjective	Verb	Adverb
umbrella	Yes	Yes	No	No
brolly	Yes	No	No	No

As nouns, brolly is a hyponym of umbrella; that is, brolly is a word with a more specific, narrower meaning than umbrella:

Other hyponyms of umbrella include gamp.

umbrella (noun)	brolly (noun)
a formation of military planes maintained over ground operations or targets	colloquial terms for an umbrella
having the function of uniting a group of similar things
a lightweight handheld collapsible canopy

umbrella (adjective)	brolly (adjective)
covering or applying simultaneously to a number of similar items or elements or groups