To trade or barter.
To replace with, as a substitute.
To recommend and get recommendations.
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.
An act of exchanging or trading.
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 diversify by placing or inserting other things among something.
To scatter or insert something into or among other things.
To mix two things irregularly, placing things of one kind among things of other.