aggravation vs aggro

aggravation and aggro both are nouns.

Word	Noun	Adjective	Verb	Adverb
aggravation	Yes	No	No	No
aggro	Yes	No	No	No

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

Other hyponyms of aggravation include last straw, taunt, taunting, twit.

aggravation (noun)	aggro (noun)
unfriendly behavior that causes anger or resentment	(informal British usage) aggravation or aggression
action that makes a problem or a disease (or its symptoms) worse
an exasperated feeling of annoyance