UI Guideline was born out of our need to solve a problem that causes a real pain in the ass: Ineffective communication between the design and the development team. There is no common language between both worlds: designers say “Select list”, developers say “Dropdown list”. Designers say “Label”, developers say “Badge”. etc. etc. etc. Creating constant friction between teams, and not to mention when the teams have more than 5 members, it's a mess.