What interestingly named gangs. Here is some more interesting shit...

Both Whoo and Choo have Crip and Blood sets in their gang, so it's a gang of Crips and Bloods VS a gang of Crips and Bloods.

Here is a copy/paste from reddit that might be able to explain it a bit better:

"There are two big movements in Brooklyn. I guess you can call them alliances. There is Woo and Cho. Woo is members of Wave Gang, which now goes by DOD (Definition of Dreams), and Cho is members of Hoodstarz. These two groups used to be cool but they started beefing in 2010 over snitching allegations. They've been warring ever since and A LOT of bodies have dropped over this. Woo consists of various Blood and Crip sets while Cho consists of various GD, Blood and some Crip sets. The Cho are allies of all GDs in Brooklyn. The Blixkys and PNV always shout out the Chos. The Chos are also called Shiggies. In NYC, certain Blood sets beef heavily with each other. For example, the Mac Balla Brims aka Hats and the Gorilla Stone Bloods aka Apes have been at each others necks for a while. Certain Hat sets and certain Ape sets are allied to Woo and Cho, respectively."

Source: https://www.reddit.com/r/Chiraqology/comments/bdm4nl/cho_vs_woo_ny_drill/