The goods or services used in such an exchange.
An exchange of goods or services without the use of money.
To exchange goods or services without involving money.
An act of exchanging or trading.
The transfer of substances or elements like gas, amino-acids, ions etc. sometimes through a surface like a membrane.
The fourth through sixth digits of a ten-digit phone number (the first three before the introduction of area codes).
The loss of a minor piece (typically a bishop or knight) and associated capture of the more advantageous rook.
A telephone exchange.
A conversation.
The difference between the values of money in different places.
A place for conducting trading.
The loss of one piece and associated capture of another.
To trade or barter.
To replace with, as a substitute.
To recommend and get recommendations.