Market where buyers and sellers conduct foreign exchange transactions, and these are some difinitions in the forex market:

Ask: Price  to sell.  Same as "Offer".

Bid:  Price  to buy.

Spread: The difference , usually in pips, between the Bid and Ask price.

Fundamental Analysis: Strategic assessments of where a currency should be trading based on a the economic condition of the country that the currency represents, monetary policy, and other "fundamental" elements.

Technical Analysis:   Analysis applied to the price action of the market to develop trading decisions, irrespective of fundamental factors. Below are the most common technical studies.

Margin:  The amount of funds required in a clients account in order to open a position or to maintain an open position.  For example, 1% margin means that $1,000 of funds on deposit are required for a $100,000 position.

Leverage:  The amount by which the notional amount traded exceeds the margin required to trade.  For example, if the notional amount traded (also referred to as "lot size" or "contract value") is $100,000 dollars and the required margin is $2,000, the trader can trade with 50 times leverage ($100,000/$2,000).

Limit: An order to buy at a specified price when the market moves down to that price, or to sell at a specified price when the market moves up to that price.

Market Order:  An order to buy at the current Ask price.

Stop: An order to buy at the market only when the market moves up to a specific price, or to sell at the market only when the market moves down to a specific price.

Margin Call:  A requirement by the broker to deposit more funds in order to maintain an open position.  Sometimes a "margin call" means that the position which does not have sufficient funds on deposit will simply be closed out by the broker.  This procedure allows the client to avoid further losses or a debit account balance.

Pip: The smallest price increment in a currency.  Often referred to as "ticks" in the futures markets.