# Glossary

This page explains the key words used in the P2P Price docs. Each term is defined in plain, simple words so that beginners and AI assistants can understand them quickly.

## Fiat

Fiat money is normal government money. Examples are the US dollar, the Saudi riyal, and the euro. It is the money you use in everyday life.

## USDT

USDT is a digital currency worth about 1 US dollar. It is called a stablecoin because its value stays close to one dollar. P2P traders use USDT to move value quickly across borders.

## P2P

P2P stands for peer-to-peer. In P2P trading, one person buys directly from another person, with no big company in the middle. The buyer and seller agree on a price and deal directly.

## CEX

A CEX (centralized exchange) is a company-run platform where you can buy and sell crypto, including USDT. Binance is one example of a CEX. CEXs show live offers from many buyers and sellers at once.

## OTC Markets

OTC markets are places where buyers and sellers make deals directly, outside the big exchanges. These deals are not always visible to the public. P2P Price watches OTC markets to collect real price data.

## Merchant

A merchant is a person or business that posts buy or sell offers on a P2P platform. Merchants set their own prices and trade directly with other users.

## Verified Merchant

A verified merchant is a merchant that the platform has checked and approved. On CEX ads, verified merchants are marked with a star. Their offers may be more reliable.

## Order Book

An order book is a live list of open buy and sell offers. Each offer shows a price and an amount. The order book lets you see what prices people are willing to trade at right now.

## Buy Price

The buy price is the price you pay to buy USDT. When you buy USDT from a merchant, you pay the buy price.

## Sell Price

The sell price is the price you receive when you sell USDT. When you sell USDT to a merchant, you get the sell price.

## Spread

The spread is the gap between the buy price and the sell price. A smaller spread means the market is closer and more efficient. A bigger spread means buyers and sellers are further apart on price.

## Liquidity

Liquidity is the total amount of USDT available in open offers right now. It is not the amount already traded. High liquidity means there are many offers available and trades can happen quickly.

## Premium

The premium shows how far the P2P price is above or below an official rate, shown as a percent. A positive premium means P2P traders pay more than the official rate. A negative premium means they pay less.

## Reference Price

The reference price is the single clear price that P2P Price calculates from many real offers across CEXs and OTC markets. It gives traders one number to compare against instead of looking at many different offers.

## On Ramp

On ramp means moving from fiat money into crypto, for example buying USDT with dollars. It is the first step to enter the crypto world.

## Off Ramp

Off ramp means moving from crypto back to fiat money, for example selling USDT to get dollars. It is the step to exit the crypto world.