Bounties
Used in the chef and detective profession. Rewards XP in the relevant skill and currency on completion. You can have a total of 6 bounties active at any given time and new bounties can be claimed every hour.
Chef Bounties
Chef bounties are available after reaching level 9 in the Chef profession. They can be grabbed from the Chef Bounty Board in The Delectable Dab Kitchen. There will be 4 options to claim that refresh every hour and you can have a maximum of 6 active bounties accepted at one time. Current active bounties can be accessed by hitting the "B" key or opening the Bounties interface. Accepted bounties never expire, but can be abandoned by selecting it and choosing the Abandon option.
Detective Bounties
Detective bounties are available after beginning the Detective profession.