A campaign is the container: what you want made, on which channel, with what budget and rates. One campaign hosts many creators.
A deal is one creator's agreement inside that campaign: their specific terms and status (invited → partnered → completed → paid).
Campaigns come in five channels: Organic (creators post UGC), Paid Ads (content for your ad accounts), Influencer (posts on big accounts), Affiliate (rev-share), and Brand Accounts (content for your own social accounts).