A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
For questions relating to IOTA addresses, how they work and what they consist of.
For questions related to Android wallet for IOTA:
attach-to-tangle a tag used for Questions on attaching addresses to the tangle.
For questions related to binance
used for Questions on the official iota Cli-Wallet.
Confirmation, a special subtopic of Transactions. Use this Tag for Confirmations of Transactions only
for questions related to Double Spending: A double spend is an attack where the given set of coins is spent in more than one transaction.