activity vs brio

activity and brio both are nouns.

Word	Noun	Adjective	Verb	Adverb
activity	Yes	No	No	No
brio	Yes	No	No	No

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

activity: the trait of being active; moving or acting rapidly and energetically
brio: quality of being active or spirited or alive and vigorous

Other hyponyms of activity include animation, invigoration, spiritedness, vivification, dynamism, oomph, pizzaz, pizzazz, zing.

activity (noun)	brio (noun)
any specific behavior	quality of being active or spirited or alive and vigorous
the trait of being active; moving or acting rapidly and energetically
an organic process that takes place in the body
a process existing in or produced by nature (rather than by the intent of human beings)
the state of being active
(chemistry) the capacity of a substance to take part in a chemical reaction