to cap: capturing the city of an enemy

LC: Lost City

tb: thunderbolt

alt: ALTernate account, the 2nd (or more) account of someone

CC: coin cluster or coin cascade (ex: how big was that CC, 2191 coins) 

SP: skill points (sometimes also called XP)

sb: Starburst (the item-upgrade, which you can only find in E and F, so it's not in this guide)

lag: When the game runs slowly or doesn't respond. Normally due to server errors or slow internet on your side.